commit e8720b872926c7fd2ffb8ed2c86c031807319985
Author: Stroeva <Stroeva95@mail.ru>
Date:   Thu Apr 6 13:43:26 2023 +0400

    create paper

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diff --git a/history.txt b/history.txt
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--- /dev/null
+++ b/history.txt
@@ -0,0 +1,148 @@
+Version history for the LLNCS LaTeX2e class
+
+ date     filename      version   action/reason/acknowledgements
+----------------------------------------------------------------------------
+ 29.5.96  letter.txt      beta    naming problems (subject index file)
+                                  thanks to Dr. Martin Held, Salzburg, AT
+
+          subjindx.ind            renamed to subjidx.ind as required
+                                  by llncs.dem
+
+          history.txt             introducing this file
+
+ 30.5.96  llncs.cls               incompatibility with new article.cls of
+                                  1995/12/20 v1.3q Standard LaTeX document class,
+                                  \if@openbib is no longer defined,
+                                  reported by Ralf Heckmann and Graham Gough
+                                  solution by David Carlisle
+
+ 10.6.96  llncs.cls               problems with fragile commands in \author field
+                                  reported by Michael Gschwind, TU Wien
+
+ 25.7.96  llncs.cls               revision a corrects:
+                                  wrong size of text area, floats not \small,
+                                  some LaTeX generated texts
+                                  reported by Michael Sperber, Uni Tuebingen
+
+ 16.4.97  all files        2.1    leaving beta state,
+                                  raising version counter to 2.1
+
+  8.6.97  llncs.cls        2.1a   revision a corrects:
+                                  unbreakable citation lists, reported by
+                                  Sergio Antoy of Portland State University
+
+11.12.97  llncs.cls        2.2    "general" headings centered; two new elements
+                                  for the article header: \email and \homedir;
+                                  complete revision of special environments:
+                                  \newtheorem replaced with \spnewtheorem,
+                                  introduced the theopargself environment;
+                                  two column parts made with multicol package;
+                                  add ons to work with the hyperref package
+
+07.01.98  llncs.cls        2.2    changed \email to simply switch to \tt
+
+25.03.98  llncs.cls        2.3    new class option "oribibl" to suppress
+                                  changes to the thebibliograpy environment
+                                  and retain pure LaTeX codes - useful
+                                  for most BibTeX applications
+
+16.04.98  llncs.cls        2.3    if option "oribibl" is given, extend the
+                                  thebibliograpy hook with "\small", suggested
+                                  by Clemens Ballarin, University of Cambridge
+
+20.11.98  llncs.cls        2.4    pagestyle "titlepage" - useful for
+                                  compilation of whole LNCS volumes
+
+12.01.99  llncs.cls        2.5    counters of orthogonal numbered special
+                                  environments are reset each new contribution
+
+27.04.99  llncs.cls        2.6    new command \thisbottomragged for the
+                                  actual page; indention of the footnote
+                                  made variable with \fnindent (default 1em);
+                                  new command \url that copys its argument
+
+ 2.03.00  llncs.cls        2.7    \figurename and \tablename made compatible
+                                  to babel, suggested by Jo Hereth, TU Darmstadt;
+                                  definition of \url moved \AtBeginDocument
+                                  (allows for url package of Donald Arseneau),
+                                  suggested by Manfred Hauswirth, TU of Vienna;
+                                  \large for part entries in the TOC
+
+16.04.00  llncs.cls        2.8    new option "orivec" to preserve the original
+                                  vector definition, read "arrow" accent
+
+17.01.01  llncs.cls        2.9    hardwired texts made polyglot,
+                                  available languages: english (default),
+                                  french, german - all are "babel-proof"
+
+20.06.01  splncs.bst              public release of a BibTeX style for LNCS,
+                                  nobly provided by Jason Noble
+
+14.08.01  llncs.cls        2.10   TOC: authors flushleft,
+                                  entries without hyphenation; suggested
+                                  by Wiro Niessen, Imaging Center - Utrecht
+
+23.01.02  llncs.cls        2.11   fixed footnote number confusion with
+                                  \thanks, numbered institutes, and normal
+                                  footnote entries; error reported by
+                                  Saverio Cittadini, Istituto Tecnico
+                                  Industriale "Tito Sarrocchi" - Siena
+
+28.01.02  llncs.cls        2.12   fixed footnote fix; error reported by
+                                  Chris Mesterharm, CS Dept. Rutgers - NJ
+
+28.01.02  llncs.cls        2.13   fixed the fix (programmer needs vacation)
+
+17.08.04  llncs.cls        2.14   TOC: authors indented, smart \and handling
+                                  for the TOC suggested by Thomas Gabel
+                                  University of Osnabrueck
+
+07.03.06  splncs.bst              fix for BibTeX entries without year; patch
+                                  provided by Jerry James, Utah State University
+
+14.06.06  splncs_srt.bst          a sorting BibTeX style for LNCS, feature
+                                  provided by Tobias Heindel, FMI Uni-Stuttgart
+
+16.10.06  llncs.dem        2.3    removed affiliations from \tocauthor demo
+
+11.12.07  llncs.doc               note on online visibility of given e-mail address
+
+15.06.09  splncs03.bst            new BibTeX style compliant with the current
+                                  requirements, provided by Maurizio "Titto"
+                                  Patrignani of Universita' Roma Tre
+
+30.03.10  llncs.cls        2.15   fixed broken hyperref interoperability;
+                                  patch provided by Sven Koehler,
+                                  Hamburg University of Technology
+
+15.04.10  llncs.cls        2.16   fixed hyperref warning for informatory TOC entries;
+                                  introduced \keywords command - finally;
+                                  blank removed from \keywordname, flaw reported
+                                  by Armin B. Wagner, IGW TU Vienna
+
+15.04.10  llncs.cls        2.17   fixed missing switch "openright" used by \backmatter;
+                                  flaw reported by Tobias Pape, University of Potsdam
+
+27.09.13  llncs.cls        2.18   fixed "ngerman" incompatibility; solution provided
+                                  by Bastian Pfleging, University of Stuttgart
+
+04.09.17  llncs.cls        2.19   introduced \orcidID command
+
+10.03.18  llncs.cls        2.20   adjusted \doi according to CrossRef requirements;
+                                  TOC: removed affiliation numbers
+
+          splncs04.bst            added doi field;
+                                  bold journal numbers
+
+          samplepaper.tex         new sample paper
+
+          llncsdoc.pdf            new LaTeX class documentation
+
+12.01.22  llncs.cls        2.21   fixed German and French \maketitle, bug reported by
+                                  Alexander Malkis, Technical University of Munich;
+                                  use detokenized argument in the definition of \doi
+                                  to allow underscores in DOIs
+
+05.09.22  llncs.cls        2.22   robust redefinition of \vec (bold italics), bug 
+                                  reported by Alexander Malkis, TUM
+
diff --git a/llncs.cls b/llncs.cls
new file mode 100644
index 0000000..de80a15
--- /dev/null
+++ b/llncs.cls
@@ -0,0 +1,1218 @@
+% LLNCS DOCUMENT CLASS -- version 2.22 (05-Sep-2022)
+% Springer Verlag LaTeX2e support for Lecture Notes in Computer Science
+%
+%%
+%% \CharacterTable
+%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+%%   Digits        \0\1\2\3\4\5\6\7\8\9
+%%   Exclamation   \!     Double quote  \"     Hash (number) \#
+%%   Dollar        \$     Percent       \%     Ampersand     \&
+%%   Acute accent  \'     Left paren    \(     Right paren   \)
+%%   Asterisk      \*     Plus          \+     Comma         \,
+%%   Minus         \-     Point         \.     Solidus       \/
+%%   Colon         \:     Semicolon     \;     Less than     \<
+%%   Equals        \=     Greater than  \>     Question mark \?
+%%   Commercial at \@     Left bracket  \[     Backslash     \\
+%%   Right bracket \]     Circumflex    \^     Underscore    \_
+%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
+%%   Right brace   \}     Tilde         \~}
+%%
+\NeedsTeXFormat{LaTeX2e}[1995/12/01]
+\ProvidesClass{llncs}[2022/09/05 v2.22
+^^J LaTeX document class for Lecture Notes in Computer Science]
+% Options
+\let\if@envcntreset\iffalse
+\DeclareOption{envcountreset}{\let\if@envcntreset\iftrue}
+\DeclareOption{citeauthoryear}{\let\citeauthoryear=Y}
+\DeclareOption{oribibl}{\let\oribibl=Y}
+\let\if@custvec\iftrue
+\DeclareOption{orivec}{\let\if@custvec\iffalse}
+\let\if@envcntsame\iffalse
+\DeclareOption{envcountsame}{\let\if@envcntsame\iftrue}
+\let\if@envcntsect\iffalse
+\DeclareOption{envcountsect}{\let\if@envcntsect\iftrue}
+\let\if@runhead\iffalse
+\DeclareOption{runningheads}{\let\if@runhead\iftrue}
+
+\let\if@openright\iftrue
+\let\if@openbib\iffalse
+\DeclareOption{openbib}{\let\if@openbib\iftrue}
+
+% languages
+\let\switcht@@therlang\relax
+\def\ds@deutsch{\def\switcht@@therlang{\switcht@deutsch}}
+\def\ds@francais{\def\switcht@@therlang{\switcht@francais}}
+
+\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
+
+\ProcessOptions
+
+\LoadClass[twoside]{article}
+\RequirePackage{multicol} % needed for the list of participants, index
+\RequirePackage{aliascnt}
+
+\setlength{\textwidth}{12.2cm}
+\setlength{\textheight}{19.3cm}
+\renewcommand\@pnumwidth{2em}
+\renewcommand\@tocrmarg{3.5em}
+%
+\def\@dottedtocline#1#2#3#4#5{%
+  \ifnum #1>\c@tocdepth \else
+    \vskip \z@ \@plus.2\p@
+    {\leftskip #2\relax \rightskip \@tocrmarg \advance\rightskip by 0pt plus 2cm
+               \parfillskip -\rightskip \pretolerance=10000
+     \parindent #2\relax\@afterindenttrue
+     \interlinepenalty\@M
+     \leavevmode
+     \@tempdima #3\relax
+     \advance\leftskip \@tempdima \null\nobreak\hskip -\leftskip
+     {#4}\nobreak
+     \leaders\hbox{$\m@th
+        \mkern \@dotsep mu\hbox{.}\mkern \@dotsep
+        mu$}\hfill
+     \nobreak
+     \hb@xt@\@pnumwidth{\hfil\normalfont \normalcolor #5}%
+     \par}%
+  \fi}
+%
+\def\switcht@albion{%
+\def\abstractname{Abstract.}
+\def\ackname{Acknowledgement.}
+\def\andname{and}
+\def\lastandname{\unskip, and}
+\def\appendixname{Appendix}
+\def\chaptername{Chapter}
+\def\claimname{Claim}
+\def\conjecturename{Conjecture}
+\def\contentsname{Table of Contents}
+\def\corollaryname{Corollary}
+\def\definitionname{Definition}
+\def\examplename{Example}
+\def\exercisename{Exercise}
+\def\figurename{Fig.}
+\def\keywordname{{\bf Keywords:}}
+\def\indexname{Index}
+\def\lemmaname{Lemma}
+\def\contriblistname{List of Contributors}
+\def\listfigurename{List of Figures}
+\def\listtablename{List of Tables}
+\def\mailname{{\it Correspondence to\/}:}
+\def\noteaddname{Note added in proof}
+\def\notename{Note}
+\def\partname{Part}
+\def\problemname{Problem}
+\def\proofname{Proof}
+\def\propertyname{Property}
+\def\propositionname{Proposition}
+\def\questionname{Question}
+\def\remarkname{Remark}
+\def\seename{see}
+\def\solutionname{Solution}
+\def\subclassname{{\it Subject Classifications\/}:}
+\def\tablename{Table}
+\def\theoremname{Theorem}}
+\switcht@albion
+% Names of theorem like environments are already defined
+% but must be translated if another language is chosen
+%
+% French section
+\def\switcht@francais{%\typeout{On parle francais.}%
+ \def\abstractname{R\'esum\'e.}%
+ \def\ackname{Remerciements.}%
+ \def\andname{et}%
+ \def\lastandname{ et}%
+ \def\appendixname{Appendice}%
+ \def\chaptername{Chapitre}%
+ \def\claimname{Pr\'etention}%
+ \def\conjecturename{Hypoth\`ese}%
+ \def\contentsname{Table des mati\`eres}%
+ \def\corollaryname{Corollaire}%
+ \def\definitionname{D\'efinition}%
+ \def\examplename{Exemple}%
+ \def\exercisename{Exercice}%
+ \def\figurename{Fig.}%
+ \def\keywordname{{\bf Mots-cl\'e:}}%
+ \def\indexname{Index}%
+ \def\lemmaname{Lemme}%
+ \def\contriblistname{Liste des contributeurs}%
+ \def\listfigurename{Liste des figures}%
+ \def\listtablename{Liste des tables}%
+ \def\mailname{{\it Correspondence to\/}:}%
+ \def\noteaddname{Note ajout\'ee \`a l'\'epreuve}%
+ \def\notename{Remarque}%
+ \def\partname{Partie}%
+ \def\problemname{Probl\`eme}%
+ \def\proofname{Preuve}%
+ \def\propertyname{Caract\'eristique}%
+%\def\propositionname{Proposition}%
+ \def\questionname{Question}%
+ \def\remarkname{Remarque}%
+ \def\seename{voir}%
+ \def\solutionname{Solution}%
+ \def\subclassname{{\it Subject Classifications\/}:}%
+ \def\tablename{Tableau}%
+ \def\theoremname{Th\'eor\`eme}%
+}
+%
+% German section
+\def\switcht@deutsch{%\typeout{Man spricht deutsch.}%
+ \def\abstractname{Zusammenfassung.}%
+ \def\ackname{Danksagung.}%
+ \def\andname{und}%
+ \def\lastandname{ und}%
+ \def\appendixname{Anhang}%
+ \def\chaptername{Kapitel}%
+ \def\claimname{Behauptung}%
+ \def\conjecturename{Hypothese}%
+ \def\contentsname{Inhaltsverzeichnis}%
+ \def\corollaryname{Korollar}%
+%\def\definitionname{Definition}%
+ \def\examplename{Beispiel}%
+ \def\exercisename{\"Ubung}%
+ \def\figurename{Abb.}%
+ \def\keywordname{{\bf Schl\"usselw\"orter:}}%
+ \def\indexname{Index}%
+%\def\lemmaname{Lemma}%
+ \def\contriblistname{Mitarbeiter}%
+ \def\listfigurename{Abbildungsverzeichnis}%
+ \def\listtablename{Tabellenverzeichnis}%
+ \def\mailname{{\it Correspondence to\/}:}%
+ \def\noteaddname{Nachtrag}%
+ \def\notename{Anmerkung}%
+ \def\partname{Teil}%
+%\def\problemname{Problem}%
+ \def\proofname{Beweis}%
+ \def\propertyname{Eigenschaft}%
+%\def\propositionname{Proposition}%
+ \def\questionname{Frage}%
+ \def\remarkname{Anmerkung}%
+ \def\seename{siehe}%
+ \def\solutionname{L\"osung}%
+ \def\subclassname{{\it Subject Classifications\/}:}%
+ \def\tablename{Tabelle}%
+%\def\theoremname{Theorem}%
+}
+
+% Ragged bottom for the actual page
+\def\thisbottomragged{\def\@textbottom{\vskip\z@ plus.0001fil
+\global\let\@textbottom\relax}}
+
+\renewcommand\small{%
+   \@setfontsize\small\@ixpt{11}%
+   \abovedisplayskip 8.5\p@ \@plus3\p@ \@minus4\p@
+   \abovedisplayshortskip \z@ \@plus2\p@
+   \belowdisplayshortskip 4\p@ \@plus2\p@ \@minus2\p@
+   \def\@listi{\leftmargin\leftmargini
+               \parsep 0\p@ \@plus1\p@ \@minus\p@
+               \topsep 8\p@ \@plus2\p@ \@minus4\p@
+               \itemsep0\p@}%
+   \belowdisplayskip \abovedisplayskip
+}
+
+\frenchspacing
+\widowpenalty=10000
+\clubpenalty=10000
+
+\setlength\oddsidemargin   {63\p@}
+\setlength\evensidemargin  {63\p@}
+\setlength\marginparwidth  {90\p@}
+
+\setlength\headsep   {16\p@}
+
+\setlength\footnotesep{7.7\p@}
+\setlength\textfloatsep{8mm\@plus 2\p@ \@minus 4\p@}
+\setlength\intextsep   {8mm\@plus 2\p@ \@minus 2\p@}
+
+\setcounter{secnumdepth}{2}
+
+\newcounter {chapter}
+\renewcommand\thechapter      {\@arabic\c@chapter}
+
+\newif\if@mainmatter \@mainmattertrue
+\newcommand\frontmatter{\cleardoublepage
+            \@mainmatterfalse\pagenumbering{Roman}}
+\newcommand\mainmatter{\cleardoublepage
+       \@mainmattertrue\pagenumbering{arabic}}
+\newcommand\backmatter{\if@openright\cleardoublepage\else\clearpage\fi
+      \@mainmatterfalse}
+
+\renewcommand\part{\cleardoublepage
+                 \thispagestyle{empty}%
+                 \if@twocolumn
+                     \onecolumn
+                     \@tempswatrue
+                   \else
+                     \@tempswafalse
+                 \fi
+                 \null\vfil
+                 \secdef\@part\@spart}
+
+\def\@part[#1]#2{%
+    \ifnum \c@secnumdepth >-2\relax
+      \refstepcounter{part}%
+      \addcontentsline{toc}{part}{\thepart\hspace{1em}#1}%
+    \else
+      \addcontentsline{toc}{part}{#1}%
+    \fi
+    \markboth{}{}%
+    {\centering
+     \interlinepenalty \@M
+     \normalfont
+     \ifnum \c@secnumdepth >-2\relax
+       \huge\bfseries \partname~\thepart
+       \par
+       \vskip 20\p@
+     \fi
+     \Huge \bfseries #2\par}%
+    \@endpart}
+\def\@spart#1{%
+    {\centering
+     \interlinepenalty \@M
+     \normalfont
+     \Huge \bfseries #1\par}%
+    \@endpart}
+\def\@endpart{\vfil\newpage
+              \if@twoside
+                \null
+                \thispagestyle{empty}%
+                \newpage
+              \fi
+              \if@tempswa
+                \twocolumn
+              \fi}
+
+\newcommand\chapter{\clearpage
+                    \thispagestyle{empty}%
+                    \global\@topnum\z@
+                    \@afterindentfalse
+                    \secdef\@chapter\@schapter}
+\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
+                       \if@mainmatter
+                         \refstepcounter{chapter}%
+                         \typeout{\@chapapp\space\thechapter.}%
+                         \addcontentsline{toc}{chapter}%
+                                  {\protect\numberline{\thechapter}#1}%
+                       \else
+                         \addcontentsline{toc}{chapter}{#1}%
+                       \fi
+                    \else
+                      \addcontentsline{toc}{chapter}{#1}%
+                    \fi
+                    \chaptermark{#1}%
+                    \addtocontents{lof}{\protect\addvspace{10\p@}}%
+                    \addtocontents{lot}{\protect\addvspace{10\p@}}%
+                    \if@twocolumn
+                      \@topnewpage[\@makechapterhead{#2}]%
+                    \else
+                      \@makechapterhead{#2}%
+                      \@afterheading
+                    \fi}
+\def\@makechapterhead#1{%
+% \vspace*{50\p@}%
+  {\centering
+    \ifnum \c@secnumdepth >\m@ne
+      \if@mainmatter
+        \large\bfseries \@chapapp{} \thechapter
+        \par\nobreak
+        \vskip 20\p@
+      \fi
+    \fi
+    \interlinepenalty\@M
+    \Large \bfseries #1\par\nobreak
+    \vskip 40\p@
+  }}
+\def\@schapter#1{\if@twocolumn
+                   \@topnewpage[\@makeschapterhead{#1}]%
+                 \else
+                   \@makeschapterhead{#1}%
+                   \@afterheading
+                 \fi}
+\def\@makeschapterhead#1{%
+% \vspace*{50\p@}%
+  {\centering
+    \normalfont
+    \interlinepenalty\@M
+    \Large \bfseries  #1\par\nobreak
+    \vskip 40\p@
+  }}
+
+\renewcommand\section{\@startsection{section}{1}{\z@}%
+                       {-18\p@ \@plus -4\p@ \@minus -4\p@}%
+                       {12\p@ \@plus 4\p@ \@minus 4\p@}%
+                       {\normalfont\large\bfseries\boldmath
+                        \rightskip=\z@ \@plus 8em\pretolerance=10000 }}
+\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
+                       {-18\p@ \@plus -4\p@ \@minus -4\p@}%
+                       {8\p@ \@plus 4\p@ \@minus 4\p@}%
+                       {\normalfont\normalsize\bfseries\boldmath
+                        \rightskip=\z@ \@plus 8em\pretolerance=10000 }}
+\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
+                       {-18\p@ \@plus -4\p@ \@minus -4\p@}%
+                       {-0.5em \@plus -0.22em \@minus -0.1em}%
+                       {\normalfont\normalsize\bfseries\boldmath}}
+\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
+                       {-12\p@ \@plus -4\p@ \@minus -4\p@}%
+                       {-0.5em \@plus -0.22em \@minus -0.1em}%
+                       {\normalfont\normalsize\itshape}}
+\renewcommand\subparagraph[1]{\typeout{LLNCS warning: You should not use
+                  \string\subparagraph\space with this class}\vskip0.5cm
+You should not use \verb|\subparagraph| with this class.\vskip0.5cm}
+
+\DeclareMathSymbol{\Gamma}{\mathalpha}{letters}{"00}
+\DeclareMathSymbol{\Delta}{\mathalpha}{letters}{"01}
+\DeclareMathSymbol{\Theta}{\mathalpha}{letters}{"02}
+\DeclareMathSymbol{\Lambda}{\mathalpha}{letters}{"03}
+\DeclareMathSymbol{\Xi}{\mathalpha}{letters}{"04}
+\DeclareMathSymbol{\Pi}{\mathalpha}{letters}{"05}
+\DeclareMathSymbol{\Sigma}{\mathalpha}{letters}{"06}
+\DeclareMathSymbol{\Upsilon}{\mathalpha}{letters}{"07}
+\DeclareMathSymbol{\Phi}{\mathalpha}{letters}{"08}
+\DeclareMathSymbol{\Psi}{\mathalpha}{letters}{"09}
+\DeclareMathSymbol{\Omega}{\mathalpha}{letters}{"0A}
+
+\let\footnotesize\small
+
+\if@custvec
+\DeclareRobustCommand\vec[1]{\mathchoice{\mbox{\boldmath$\displaystyle#1$}}
+{\mbox{\boldmath$\textstyle#1$}}
+{\mbox{\boldmath$\scriptstyle#1$}}
+{\mbox{\boldmath$\scriptscriptstyle#1$}}}
+\fi
+
+\def\squareforqed{\hbox{\rlap{$\sqcap$}$\sqcup$}}
+\def\qed{\ifmmode\squareforqed\else{\unskip\nobreak\hfil
+\penalty50\hskip1em\null\nobreak\hfil\squareforqed
+\parfillskip=0pt\finalhyphendemerits=0\endgraf}\fi}
+
+\def\getsto{\mathrel{\mathchoice {\vcenter{\offinterlineskip
+\halign{\hfil
+$\displaystyle##$\hfil\cr\gets\cr\to\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr\gets
+\cr\to\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr\gets
+\cr\to\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
+\gets\cr\to\cr}}}}}
+\def\lid{\mathrel{\mathchoice {\vcenter{\offinterlineskip\halign{\hfil
+$\displaystyle##$\hfil\cr<\cr\noalign{\vskip1.2pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr<\cr
+\noalign{\vskip1.2pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr<\cr
+\noalign{\vskip1pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
+<\cr
+\noalign{\vskip0.9pt}=\cr}}}}}
+\def\gid{\mathrel{\mathchoice {\vcenter{\offinterlineskip\halign{\hfil
+$\displaystyle##$\hfil\cr>\cr\noalign{\vskip1.2pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr>\cr
+\noalign{\vskip1.2pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr>\cr
+\noalign{\vskip1pt}=\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
+>\cr
+\noalign{\vskip0.9pt}=\cr}}}}}
+\def\grole{\mathrel{\mathchoice {\vcenter{\offinterlineskip
+\halign{\hfil
+$\displaystyle##$\hfil\cr>\cr\noalign{\vskip-1pt}<\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\textstyle##$\hfil\cr
+>\cr\noalign{\vskip-1pt}<\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptstyle##$\hfil\cr
+>\cr\noalign{\vskip-0.8pt}<\cr}}}
+{\vcenter{\offinterlineskip\halign{\hfil$\scriptscriptstyle##$\hfil\cr
+>\cr\noalign{\vskip-0.3pt}<\cr}}}}}
+\def\bbbr{{\rm I\!R}} %reelle Zahlen
+\def\bbbm{{\rm I\!M}}
+\def\bbbn{{\rm I\!N}} %natuerliche Zahlen
+\def\bbbf{{\rm I\!F}}
+\def\bbbh{{\rm I\!H}}
+\def\bbbk{{\rm I\!K}}
+\def\bbbp{{\rm I\!P}}
+\def\bbbone{{\mathchoice {\rm 1\mskip-4mu l} {\rm 1\mskip-4mu l}
+{\rm 1\mskip-4.5mu l} {\rm 1\mskip-5mu l}}}
+\def\bbbc{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm C$}\hbox{\hbox
+to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\textstyle\rm C$}\hbox{\hbox
+to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptstyle\rm C$}\hbox{\hbox
+to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptscriptstyle\rm C$}\hbox{\hbox
+to0pt{\kern0.4\wd0\vrule height0.9\ht0\hss}\box0}}}}
+\def\bbbq{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm
+Q$}\hbox{\raise
+0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.8\ht0\hss}\box0}}
+{\setbox0=\hbox{$\textstyle\rm Q$}\hbox{\raise
+0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.8\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptstyle\rm Q$}\hbox{\raise
+0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.7\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptscriptstyle\rm Q$}\hbox{\raise
+0.15\ht0\hbox to0pt{\kern0.4\wd0\vrule height0.7\ht0\hss}\box0}}}}
+\def\bbbt{{\mathchoice {\setbox0=\hbox{$\displaystyle\rm
+T$}\hbox{\hbox to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\textstyle\rm T$}\hbox{\hbox
+to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptstyle\rm T$}\hbox{\hbox
+to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptscriptstyle\rm T$}\hbox{\hbox
+to0pt{\kern0.3\wd0\vrule height0.9\ht0\hss}\box0}}}}
+\def\bbbs{{\mathchoice
+{\setbox0=\hbox{$\displaystyle     \rm S$}\hbox{\raise0.5\ht0\hbox
+to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\hbox
+to0pt{\kern0.55\wd0\vrule height0.5\ht0\hss}\box0}}
+{\setbox0=\hbox{$\textstyle        \rm S$}\hbox{\raise0.5\ht0\hbox
+to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\hbox
+to0pt{\kern0.55\wd0\vrule height0.5\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptstyle      \rm S$}\hbox{\raise0.5\ht0\hbox
+to0pt{\kern0.35\wd0\vrule height0.45\ht0\hss}\raise0.05\ht0\hbox
+to0pt{\kern0.5\wd0\vrule height0.45\ht0\hss}\box0}}
+{\setbox0=\hbox{$\scriptscriptstyle\rm S$}\hbox{\raise0.5\ht0\hbox
+to0pt{\kern0.4\wd0\vrule height0.45\ht0\hss}\raise0.05\ht0\hbox
+to0pt{\kern0.55\wd0\vrule height0.45\ht0\hss}\box0}}}}
+\def\bbbz{{\mathchoice {\hbox{$\mathsf\textstyle Z\kern-0.4em Z$}}
+{\hbox{$\mathsf\textstyle Z\kern-0.4em Z$}}
+{\hbox{$\mathsf\scriptstyle Z\kern-0.3em Z$}}
+{\hbox{$\mathsf\scriptscriptstyle Z\kern-0.2em Z$}}}}
+
+\let\ts\,
+
+\setlength\leftmargini  {17\p@}
+\setlength\leftmargin    {\leftmargini}
+\setlength\leftmarginii  {\leftmargini}
+\setlength\leftmarginiii {\leftmargini}
+\setlength\leftmarginiv  {\leftmargini}
+\setlength  \labelsep  {.5em}
+\setlength  \labelwidth{\leftmargini}
+\addtolength\labelwidth{-\labelsep}
+
+\def\@listI{\leftmargin\leftmargini
+            \parsep 0\p@ \@plus1\p@ \@minus\p@
+            \topsep 8\p@ \@plus2\p@ \@minus4\p@
+            \itemsep0\p@}
+\let\@listi\@listI
+\@listi
+\def\@listii {\leftmargin\leftmarginii
+              \labelwidth\leftmarginii
+              \advance\labelwidth-\labelsep
+              \topsep    0\p@ \@plus2\p@ \@minus\p@}
+\def\@listiii{\leftmargin\leftmarginiii
+              \labelwidth\leftmarginiii
+              \advance\labelwidth-\labelsep
+              \topsep    0\p@ \@plus\p@\@minus\p@
+              \parsep    \z@
+              \partopsep \p@ \@plus\z@ \@minus\p@}
+
+\renewcommand\labelitemi{\normalfont\bfseries --}
+\renewcommand\labelitemii{$\m@th\bullet$}
+
+\setlength\arraycolsep{1.4\p@}
+\setlength\tabcolsep{1.4\p@}
+
+\def\tableofcontents{\chapter*{\contentsname\@mkboth{{\contentsname}}%
+                                                    {{\contentsname}}}
+ \def\authcount##1{\setcounter{auco}{##1}\setcounter{@auth}{1}}
+ \def\lastand{\ifnum\value{auco}=2\relax
+                 \unskip{} \andname\
+              \else
+                 \unskip \lastandname\
+              \fi}%
+ \def\and{\stepcounter{@auth}\relax
+          \ifnum\value{@auth}=\value{auco}%
+             \lastand
+          \else
+             \unskip,
+          \fi}%
+ \@starttoc{toc}\if@restonecol\twocolumn\fi}
+
+\def\l@part#1#2{\addpenalty{\@secpenalty}%
+   \addvspace{2em plus\p@}%  % space above part line
+   \begingroup
+     \parindent \z@
+     \rightskip \z@ plus 5em
+     \hrule\vskip5pt
+     \large               % same size as for a contribution heading
+     \bfseries\boldmath   % set line in boldface
+     \leavevmode          % TeX command to enter horizontal mode.
+     #1\par
+     \vskip5pt
+     \hrule
+     \vskip1pt
+     \nobreak             % Never break after part entry
+   \endgroup}
+
+\def\@dotsep{2}
+
+\let\phantomsection=\relax
+
+\def\hyperhrefextend{\ifx\hyper@anchor\@undefined\else
+{}\fi}
+
+\def\addnumcontentsmark#1#2#3{%
+\addtocontents{#1}{\protect\contentsline{#2}{\protect\numberline
+                     {\thechapter}#3}{\thepage}\hyperhrefextend}}%
+\def\addcontentsmark#1#2#3{%
+\addtocontents{#1}{\protect\contentsline{#2}{#3}{\thepage}\hyperhrefextend}}%
+\def\addcontentsmarkwop#1#2#3{%
+\addtocontents{#1}{\protect\contentsline{#2}{#3}{0}\hyperhrefextend}}%
+
+\def\@adcmk[#1]{\ifcase #1 \or
+\def\@gtempa{\addnumcontentsmark}%
+  \or    \def\@gtempa{\addcontentsmark}%
+  \or    \def\@gtempa{\addcontentsmarkwop}%
+  \fi\@gtempa{toc}{chapter}%
+}
+\def\addtocmark{%
+\phantomsection
+\@ifnextchar[{\@adcmk}{\@adcmk[3]}%
+}
+
+\def\l@chapter#1#2{\addpenalty{-\@highpenalty}
+ \vskip 1.0em plus 1pt \@tempdima 1.5em \begingroup
+ \parindent \z@ \rightskip \@tocrmarg
+ \advance\rightskip by 0pt plus 2cm
+ \parfillskip -\rightskip \pretolerance=10000
+ \leavevmode \advance\leftskip\@tempdima \hskip -\leftskip
+ {\large\bfseries\boldmath#1}\ifx0#2\hfil\null
+ \else
+      \nobreak
+      \leaders\hbox{$\m@th \mkern \@dotsep mu.\mkern
+      \@dotsep mu$}\hfill
+      \nobreak\hbox to\@pnumwidth{\hss #2}%
+ \fi\par
+ \penalty\@highpenalty \endgroup}
+
+\def\l@title#1#2{\addpenalty{-\@highpenalty}
+ \addvspace{8pt plus 1pt}
+ \@tempdima \z@
+ \begingroup
+ \parindent \z@ \rightskip \@tocrmarg
+ \advance\rightskip by 0pt plus 2cm
+ \parfillskip -\rightskip \pretolerance=10000
+ \leavevmode \advance\leftskip\@tempdima \hskip -\leftskip
+ #1\nobreak
+ \leaders\hbox{$\m@th \mkern \@dotsep mu.\mkern
+ \@dotsep mu$}\hfill
+ \nobreak\hbox to\@pnumwidth{\hss #2}\par
+ \penalty\@highpenalty \endgroup}
+
+\def\l@author#1#2{\addpenalty{\@highpenalty}
+ \@tempdima=15\p@ %\z@
+ \begingroup
+ \parindent \z@ \rightskip \@tocrmarg
+ \advance\rightskip by 0pt plus 2cm
+ \pretolerance=10000
+ \leavevmode \advance\leftskip\@tempdima %\hskip -\leftskip
+ \textit{#1}\par
+ \penalty\@highpenalty \endgroup}
+
+\setcounter{tocdepth}{0}
+\newdimen\tocchpnum
+\newdimen\tocsecnum
+\newdimen\tocsectotal
+\newdimen\tocsubsecnum
+\newdimen\tocsubsectotal
+\newdimen\tocsubsubsecnum
+\newdimen\tocsubsubsectotal
+\newdimen\tocparanum
+\newdimen\tocparatotal
+\newdimen\tocsubparanum
+\tocchpnum=\z@            % no chapter numbers
+\tocsecnum=15\p@          % section 88. plus 2.222pt
+\tocsubsecnum=23\p@       % subsection 88.8 plus 2.222pt
+\tocsubsubsecnum=27\p@    % subsubsection 88.8.8 plus 1.444pt
+\tocparanum=35\p@         % paragraph 88.8.8.8 plus 1.666pt
+\tocsubparanum=43\p@      % subparagraph 88.8.8.8.8 plus 1.888pt
+\def\calctocindent{%
+\tocsectotal=\tocchpnum
+\advance\tocsectotal by\tocsecnum
+\tocsubsectotal=\tocsectotal
+\advance\tocsubsectotal by\tocsubsecnum
+\tocsubsubsectotal=\tocsubsectotal
+\advance\tocsubsubsectotal by\tocsubsubsecnum
+\tocparatotal=\tocsubsubsectotal
+\advance\tocparatotal by\tocparanum}
+\calctocindent
+
+\def\l@section{\@dottedtocline{1}{\tocchpnum}{\tocsecnum}}
+\def\l@subsection{\@dottedtocline{2}{\tocsectotal}{\tocsubsecnum}}
+\def\l@subsubsection{\@dottedtocline{3}{\tocsubsectotal}{\tocsubsubsecnum}}
+\def\l@paragraph{\@dottedtocline{4}{\tocsubsubsectotal}{\tocparanum}}
+\def\l@subparagraph{\@dottedtocline{5}{\tocparatotal}{\tocsubparanum}}
+
+\def\listoffigures{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
+ \fi\section*{\listfigurename\@mkboth{{\listfigurename}}{{\listfigurename}}}
+ \@starttoc{lof}\if@restonecol\twocolumn\fi}
+\def\l@figure{\@dottedtocline{1}{0em}{1.5em}}
+
+\def\listoftables{\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn
+ \fi\section*{\listtablename\@mkboth{{\listtablename}}{{\listtablename}}}
+ \@starttoc{lot}\if@restonecol\twocolumn\fi}
+\let\l@table\l@figure
+
+\renewcommand\listoffigures{%
+    \section*{\listfigurename
+      \@mkboth{\listfigurename}{\listfigurename}}%
+    \@starttoc{lof}%
+    }
+
+\renewcommand\listoftables{%
+    \section*{\listtablename
+      \@mkboth{\listtablename}{\listtablename}}%
+    \@starttoc{lot}%
+    }
+
+\ifx\oribibl\undefined
+\ifx\citeauthoryear\undefined
+\renewenvironment{thebibliography}[1]
+     {\section*{\refname}
+      \def\@biblabel##1{##1.}
+      \small
+      \list{\@biblabel{\@arabic\c@enumiv}}%
+           {\settowidth\labelwidth{\@biblabel{#1}}%
+            \leftmargin\labelwidth
+            \advance\leftmargin\labelsep
+            \if@openbib
+              \advance\leftmargin\bibindent
+              \itemindent -\bibindent
+              \listparindent \itemindent
+              \parsep \z@
+            \fi
+            \usecounter{enumiv}%
+            \let\p@enumiv\@empty
+            \renewcommand\theenumiv{\@arabic\c@enumiv}}%
+      \if@openbib
+        \renewcommand\newblock{\par}%
+      \else
+        \renewcommand\newblock{\hskip .11em \@plus.33em \@minus.07em}%
+      \fi
+      \sloppy\clubpenalty4000\widowpenalty4000%
+      \sfcode`\.=\@m}
+     {\def\@noitemerr
+       {\@latex@warning{Empty `thebibliography' environment}}%
+      \endlist}
+\def\@lbibitem[#1]#2{\item[{[#1]}\hfill]\if@filesw
+     {\let\protect\noexpand\immediate
+     \write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces}
+\newcount\@tempcntc
+\def\@citex[#1]#2{\if@filesw\immediate\write\@auxout{\string\citation{#2}}\fi
+  \@tempcnta\z@\@tempcntb\m@ne\def\@citea{}\@cite{\@for\@citeb:=#2\do
+    {\@ifundefined
+       {b@\@citeb}{\@citeo\@tempcntb\m@ne\@citea\def\@citea{,}{\bfseries
+        ?}\@warning
+       {Citation `\@citeb' on page \thepage \space undefined}}%
+    {\setbox\z@\hbox{\global\@tempcntc0\csname b@\@citeb\endcsname\relax}%
+     \ifnum\@tempcntc=\z@ \@citeo\@tempcntb\m@ne
+       \@citea\def\@citea{,}\hbox{\csname b@\@citeb\endcsname}%
+     \else
+      \advance\@tempcntb\@ne
+      \ifnum\@tempcntb=\@tempcntc
+      \else\advance\@tempcntb\m@ne\@citeo
+      \@tempcnta\@tempcntc\@tempcntb\@tempcntc\fi\fi}}\@citeo}{#1}}
+\def\@citeo{\ifnum\@tempcnta>\@tempcntb\else
+               \@citea\def\@citea{,\,\hskip\z@skip}%
+               \ifnum\@tempcnta=\@tempcntb\the\@tempcnta\else
+               {\advance\@tempcnta\@ne\ifnum\@tempcnta=\@tempcntb \else
+                \def\@citea{--}\fi
+      \advance\@tempcnta\m@ne\the\@tempcnta\@citea\the\@tempcntb}\fi\fi}
+\else
+\renewenvironment{thebibliography}[1]
+     {\section*{\refname}
+      \small
+      \list{}%
+           {\settowidth\labelwidth{}%
+            \leftmargin\parindent
+            \itemindent=-\parindent
+            \labelsep=\z@
+            \if@openbib
+              \advance\leftmargin\bibindent
+              \itemindent -\bibindent
+              \listparindent \itemindent
+              \parsep \z@
+            \fi
+            \usecounter{enumiv}%
+            \let\p@enumiv\@empty
+            \renewcommand\theenumiv{}}%
+      \if@openbib
+        \renewcommand\newblock{\par}%
+      \else
+        \renewcommand\newblock{\hskip .11em \@plus.33em \@minus.07em}%
+      \fi
+      \sloppy\clubpenalty4000\widowpenalty4000%
+      \sfcode`\.=\@m}
+     {\def\@noitemerr
+       {\@latex@warning{Empty `thebibliography' environment}}%
+      \endlist}
+      \def\@cite#1{#1}%
+      \def\@lbibitem[#1]#2{\item[]\if@filesw
+        {\def\protect##1{\string ##1\space}\immediate
+      \write\@auxout{\string\bibcite{#2}{#1}}}\fi\ignorespaces}
+   \fi
+\else
+\@cons\@openbib@code{\noexpand\small}
+\fi
+
+\def\idxquad{\hskip 10\p@}% space that divides entry from number
+
+\def\@idxitem{\par\hangindent 10\p@}
+
+\def\subitem{\par\setbox0=\hbox{--\enspace}% second order
+                \noindent\hangindent\wd0\box0}% index entry
+
+\def\subsubitem{\par\setbox0=\hbox{--\,--\enspace}% third
+                \noindent\hangindent\wd0\box0}% order index entry
+
+\def\indexspace{\par \vskip 10\p@ plus5\p@ minus3\p@\relax}
+
+\renewenvironment{theindex}
+               {\@mkboth{\indexname}{\indexname}%
+                \thispagestyle{empty}\parindent\z@
+                \parskip\z@ \@plus .3\p@\relax
+                \let\item\par
+                \def\,{\relax\ifmmode\mskip\thinmuskip
+                             \else\hskip0.2em\ignorespaces\fi}%
+                \normalfont\small
+                \begin{multicols}{2}[\@makeschapterhead{\indexname}]%
+                }
+                {\end{multicols}}
+
+\renewcommand\footnoterule{%
+  \kern-3\p@
+  \hrule\@width 2truecm
+  \kern2.6\p@}
+  \newdimen\fnindent
+  \fnindent1em
+\long\def\@makefntext#1{%
+    \parindent \fnindent%
+    \leftskip \fnindent%
+    \noindent
+    \llap{\hb@xt@1em{\hss\@makefnmark\ }}\ignorespaces#1}
+
+\long\def\@makecaption#1#2{%
+  \small
+  \vskip\abovecaptionskip
+  \sbox\@tempboxa{{\bfseries #1.} #2}%
+  \ifdim \wd\@tempboxa >\hsize
+    {\bfseries #1.} #2\par
+  \else
+    \global \@minipagefalse
+    \hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
+  \fi
+  \vskip\belowcaptionskip}
+
+\def\fps@figure{htbp}
+\def\fnum@figure{\figurename\thinspace\thefigure}
+\def \@floatboxreset {%
+        \reset@font
+        \small
+        \@setnobreak
+        \@setminipage
+}
+\def\fps@table{htbp}
+\def\fnum@table{\tablename~\thetable}
+\renewenvironment{table}
+               {\setlength\abovecaptionskip{0\p@}%
+                \setlength\belowcaptionskip{10\p@}%
+                \@float{table}}
+               {\end@float}
+\renewenvironment{table*}
+               {\setlength\abovecaptionskip{0\p@}%
+                \setlength\belowcaptionskip{10\p@}%
+                \@dblfloat{table}}
+               {\end@dblfloat}
+
+\long\def\@caption#1[#2]#3{\par\addcontentsline{\csname
+  ext@#1\endcsname}{#1}{\protect\numberline{\csname
+  the#1\endcsname}{\ignorespaces #2}}\begingroup
+    \@parboxrestore
+    \@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
+  \endgroup}
+
+% LaTeX does not provide a command to enter the authors institute
+% addresses. The \institute command is defined here.
+
+\newcounter{@inst}
+\newcounter{@auth}
+\newcounter{auco}
+\newdimen\instindent
+\newbox\authrun
+\newtoks\authorrunning
+\newtoks\tocauthor
+\newbox\titrun
+\newtoks\titlerunning
+\newtoks\toctitle
+
+\def\clearheadinfo{\gdef\@author{No Author Given}%
+                   \gdef\@title{No Title Given}%
+                   \gdef\@subtitle{}%
+                   \gdef\@institute{No Institute Given}%
+                   \gdef\@thanks{}%
+                   \global\titlerunning={}\global\authorrunning={}%
+                   \global\toctitle={}\global\tocauthor={}}
+
+\def\institute#1{\gdef\@institute{#1}}
+
+\def\institutename{\par
+ \begingroup
+ \parskip=\z@
+ \parindent=\z@
+ \setcounter{@inst}{1}%
+ \def\and{\par\stepcounter{@inst}%
+ \noindent$^{\the@inst}$\enspace\ignorespaces}%
+ \setbox0=\vbox{\def\thanks##1{}\@institute}%
+ \ifnum\c@@inst=1\relax
+   \gdef\fnnstart{0}%
+ \else
+   \xdef\fnnstart{\c@@inst}%
+   \setcounter{@inst}{1}%
+   \noindent$^{\the@inst}$\enspace
+ \fi
+ \ignorespaces
+ \@institute\par
+ \endgroup}
+
+\def\@fnsymbol#1{\ensuremath{\ifcase#1\or\star\or{\star\star}\or
+   {\star\star\star}\or \dagger\or \ddagger\or
+   \mathchar "278\or \mathchar "27B\or \|\or **\or \dagger\dagger
+   \or \ddagger\ddagger \else\@ctrerr\fi}}
+
+\def\inst#1{\unskip$^{#1}$}
+\def\orcidID#1{\unskip$^{[#1]}$} % added MR 2018-03-10
+\def\fnmsep{\unskip$^,$}
+\def\email#1{{\tt#1}}
+
+\AtBeginDocument{\@ifundefined{url}{\def\url#1{#1}}{}%
+\@ifpackageloaded{babel}{%
+\@ifundefined{extrasenglish}{}{\addto\extrasenglish{\switcht@albion}}%
+\@ifundefined{extrasfrenchb}{}{\addto\extrasfrenchb{\switcht@francais}}%
+\@ifundefined{extrasgerman}{}{\addto\extrasgerman{\switcht@deutsch}}%
+\@ifundefined{extrasngerman}{}{\addto\extrasngerman{\switcht@deutsch}}%
+}{\switcht@@therlang}%
+\providecommand{\keywords}[1]{\def\and{{\textperiodcentered} }%
+\par\addvspace\baselineskip
+\noindent\keywordname\enspace\ignorespaces#1}%
+\@ifpackageloaded{hyperref}{%
+\def\doi#1{\href{https://doi.org/\detokenize{#1}}{\url{https://doi.org/#1}}}}{
+\def\doi#1{https://doi.org/\detokenize{#1}}}
+}
+\def\homedir{\~{ }}
+
+\def\subtitle#1{\gdef\@subtitle{#1}}
+\clearheadinfo
+%
+%%% to avoid hyperref warnings
+\providecommand*{\toclevel@author}{999}
+%%% to make title-entry parent of section-entries
+\providecommand*{\toclevel@title}{0}
+%
+\renewcommand\maketitle{\newpage
+\phantomsection
+  \refstepcounter{chapter}%
+  \stepcounter{section}%
+  \setcounter{section}{0}%
+  \setcounter{subsection}{0}%
+  \setcounter{figure}{0}
+  \setcounter{table}{0}
+  \setcounter{equation}{0}
+  \setcounter{footnote}{0}%
+  \begingroup
+    \parindent=\z@
+    \renewcommand\thefootnote{\@fnsymbol\c@footnote}%
+    \if@twocolumn
+      \ifnum \col@number=\@ne
+        \@maketitle
+      \else
+        \twocolumn[\@maketitle]%
+      \fi
+    \else
+      \newpage
+      \global\@topnum\z@   % Prevents figures from going at top of page.
+      \@maketitle
+    \fi
+    \thispagestyle{empty}\@thanks
+%
+    \def\\{\unskip\ \ignorespaces}\def\inst##1{\unskip{}}%
+    \def\thanks##1{\unskip{}}\def\fnmsep{\unskip}%
+    \instindent=\hsize
+    \advance\instindent by-\headlineindent
+    \if!\the\toctitle!\addcontentsline{toc}{title}{\@title}\else
+       \addcontentsline{toc}{title}{\the\toctitle}\fi
+    \if@runhead
+       \if!\the\titlerunning!\else
+         \edef\@title{\the\titlerunning}%
+       \fi
+       \global\setbox\titrun=\hbox{\small\rm\unboldmath\ignorespaces\@title}%
+       \ifdim\wd\titrun>\instindent
+          \typeout{Title too long for running head. Please supply}%
+          \typeout{a shorter form with \string\titlerunning\space prior to
+                   \string\maketitle}%
+          \global\setbox\titrun=\hbox{\small\rm
+          Title Suppressed Due to Excessive Length}%
+       \fi
+       \xdef\@title{\copy\titrun}%
+    \fi
+%
+    \if!\the\tocauthor!\relax
+      {\def\and{\noexpand\protect\noexpand\and}%
+       \def\inst##1{}%    added MR 2017-09-20 to remove inst numbers from the TOC
+       \def\orcidID##1{}% added MR 2017-09-20 to remove ORCID ids from the TOC
+      \protected@xdef\toc@uthor{\@author}}%
+    \else
+      \def\\{\noexpand\protect\noexpand\newline}%
+      \protected@xdef\scratch{\the\tocauthor}%
+      \protected@xdef\toc@uthor{\scratch}%
+    \fi
+    \addtocontents{toc}{\noexpand\protect\noexpand\authcount{\the\c@auco}}%
+    \addcontentsline{toc}{author}{\toc@uthor}%
+    \if@runhead
+       \if!\the\authorrunning!
+         \value{@inst}=\value{@auth}%
+         \setcounter{@auth}{1}%
+       \else
+         \edef\@author{\the\authorrunning}%
+       \fi
+       \global\setbox\authrun=\hbox{\def\inst##1{}%    added MR 2017-09-20 to remove inst numbers from the runninghead
+                                    \def\orcidID##1{}% added MR 2017-09-20 to remove ORCID ids from the runninghead
+                                    \small\unboldmath\@author\unskip}%
+       \ifdim\wd\authrun>\instindent
+          \typeout{Names of authors too long for running head. Please supply}%
+          \typeout{a shorter form with \string\authorrunning\space prior to
+                   \string\maketitle}%
+          \global\setbox\authrun=\hbox{\small\rm
+          Authors Suppressed Due to Excessive Length}%
+       \fi
+       \xdef\@author{\copy\authrun}%
+       \markboth{\@author}{\@title}%
+     \fi
+  \endgroup
+  \setcounter{footnote}{\fnnstart}%
+  \clearheadinfo}
+%
+\def\@maketitle{\newpage
+ \markboth{}{}%
+ \def\lastand{\ifnum\value{@inst}=2\relax
+                 \unskip{} \andname\
+              \else
+                 \unskip \lastandname\
+              \fi}%
+ \def\and{\stepcounter{@auth}\relax
+          \ifnum\value{@auth}=\value{@inst}%
+             \lastand
+          \else
+             \unskip,
+          \fi}%
+ \begin{center}%
+ \let\newline\\
+ {\Large \bfseries\boldmath
+  \pretolerance=10000
+  \@title \par}\vskip .8cm
+\if!\@subtitle!\else {\large \bfseries\boldmath
+  \vskip -.65cm
+  \pretolerance=10000
+  \@subtitle \par}\vskip .8cm\fi
+ \setbox0=\vbox{\setcounter{@auth}{1}\def\and{\stepcounter{@auth}}%
+ \def\thanks##1{}\@author}%
+ \global\value{@inst}=\value{@auth}%
+ \global\value{auco}=\value{@auth}%
+ \setcounter{@auth}{1}%
+{\lineskip .5em
+\noindent\ignorespaces
+\@author\vskip.35cm}
+ {\small\institutename}
+ \end{center}%
+ }
+
+% definition of the "\spnewtheorem" command.
+%
+% Usage:
+%
+%     \spnewtheorem{env_nam}{caption}[within]{cap_font}{body_font}
+% or  \spnewtheorem{env_nam}[numbered_like]{caption}{cap_font}{body_font}
+% or  \spnewtheorem*{env_nam}{caption}{cap_font}{body_font}
+%
+% New is "cap_font" and "body_font". It stands for
+% fontdefinition of the caption and the text itself.
+%
+% "\spnewtheorem*" gives a theorem without number.
+%
+% A defined spnewthoerem environment is used as described
+% by Lamport.
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\def\@thmcountersep{}
+\def\@thmcounterend{.}
+
+\def\spnewtheorem{\@ifstar{\@sthm}{\@Sthm}}
+
+% definition of \spnewtheorem with number
+
+\def\@spnthm#1#2{%
+  \@ifnextchar[{\@spxnthm{#1}{#2}}{\@spynthm{#1}{#2}}}
+\def\@Sthm#1{\@ifnextchar[{\@spothm{#1}}{\@spnthm{#1}}}
+
+\def\@spxnthm#1#2[#3]#4#5{\expandafter\@ifdefinable\csname #1\endcsname
+   {\@definecounter{#1}\@addtoreset{#1}{#3}%
+   \expandafter\xdef\csname the#1\endcsname{\expandafter\noexpand
+     \csname the#3\endcsname \noexpand\@thmcountersep \@thmcounter{#1}}%
+   \expandafter\xdef\csname #1name\endcsname{#2}%
+   \global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#4}{#5}}%
+                              \global\@namedef{end#1}{\@endtheorem}}}
+
+\def\@spynthm#1#2#3#4{\expandafter\@ifdefinable\csname #1\endcsname
+   {\@definecounter{#1}%
+   \expandafter\xdef\csname the#1\endcsname{\@thmcounter{#1}}%
+   \expandafter\xdef\csname #1name\endcsname{#2}%
+   \global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#3}{#4}}%
+                               \global\@namedef{end#1}{\@endtheorem}}}
+
+\def\@spothm#1[#2]#3#4#5{%
+  \@ifundefined{c@#2}{\@latexerr{No theorem environment `#2' defined}\@eha}%
+  {\expandafter\@ifdefinable\csname #1\endcsname
+  {\newaliascnt{#1}{#2}%
+  \expandafter\xdef\csname #1name\endcsname{#3}%
+  \global\@namedef{#1}{\@spthm{#1}{\csname #1name\endcsname}{#4}{#5}}%
+  \global\@namedef{end#1}{\@endtheorem}}}}
+
+\def\@spthm#1#2#3#4{\topsep 7\p@ \@plus2\p@ \@minus4\p@
+\refstepcounter{#1}%
+\@ifnextchar[{\@spythm{#1}{#2}{#3}{#4}}{\@spxthm{#1}{#2}{#3}{#4}}}
+
+\def\@spxthm#1#2#3#4{\@spbegintheorem{#2}{\csname the#1\endcsname}{#3}{#4}%
+                    \ignorespaces}
+
+\def\@spythm#1#2#3#4[#5]{\@spopargbegintheorem{#2}{\csname
+       the#1\endcsname}{#5}{#3}{#4}\ignorespaces}
+
+\def\@spbegintheorem#1#2#3#4{\trivlist
+                 \item[\hskip\labelsep{#3#1\ #2\@thmcounterend}]#4}
+
+\def\@spopargbegintheorem#1#2#3#4#5{\trivlist
+      \item[\hskip\labelsep{#4#1\ #2}]{#4(#3)\@thmcounterend\ }#5}
+
+% definition of \spnewtheorem* without number
+
+\def\@sthm#1#2{\@Ynthm{#1}{#2}}
+
+\def\@Ynthm#1#2#3#4{\expandafter\@ifdefinable\csname #1\endcsname
+   {\global\@namedef{#1}{\@Thm{\csname #1name\endcsname}{#3}{#4}}%
+    \expandafter\xdef\csname #1name\endcsname{#2}%
+    \global\@namedef{end#1}{\@endtheorem}}}
+
+\def\@Thm#1#2#3{\topsep 7\p@ \@plus2\p@ \@minus4\p@
+\@ifnextchar[{\@Ythm{#1}{#2}{#3}}{\@Xthm{#1}{#2}{#3}}}
+
+\def\@Xthm#1#2#3{\@Begintheorem{#1}{#2}{#3}\ignorespaces}
+
+\def\@Ythm#1#2#3[#4]{\@Opargbegintheorem{#1}
+       {#4}{#2}{#3}\ignorespaces}
+
+\def\@Begintheorem#1#2#3{#3\trivlist
+                           \item[\hskip\labelsep{#2#1\@thmcounterend}]}
+
+\def\@Opargbegintheorem#1#2#3#4{#4\trivlist
+      \item[\hskip\labelsep{#3#1}]{#3(#2)\@thmcounterend\ }}
+
+\if@envcntsect
+   \def\@thmcountersep{.}
+   \spnewtheorem{theorem}{Theorem}[section]{\bfseries}{\itshape}
+\else
+   \spnewtheorem{theorem}{Theorem}{\bfseries}{\itshape}
+   \if@envcntreset
+      \@addtoreset{theorem}{section}
+   \else
+      \@addtoreset{theorem}{chapter}
+   \fi
+\fi
+
+%definition of divers theorem environments
+\spnewtheorem*{claim}{Claim}{\itshape}{\rmfamily}
+\spnewtheorem*{proof}{Proof}{\itshape}{\rmfamily}
+\if@envcntsame % alle Umgebungen wie Theorem.
+   \def\spn@wtheorem#1#2#3#4{\@spothm{#1}[theorem]{#2}{#3}{#4}}
+\else % alle Umgebungen mit eigenem Zaehler
+   \if@envcntsect % mit section numeriert
+      \def\spn@wtheorem#1#2#3#4{\@spxnthm{#1}{#2}[section]{#3}{#4}}
+   \else % nicht mit section numeriert
+      \if@envcntreset
+         \def\spn@wtheorem#1#2#3#4{\@spynthm{#1}{#2}{#3}{#4}
+                                   \@addtoreset{#1}{section}}
+      \else
+         \def\spn@wtheorem#1#2#3#4{\@spynthm{#1}{#2}{#3}{#4}
+                                   \@addtoreset{#1}{chapter}}%
+      \fi
+   \fi
+\fi
+\spn@wtheorem{case}{Case}{\itshape}{\rmfamily}
+\spn@wtheorem{conjecture}{Conjecture}{\itshape}{\rmfamily}
+\spn@wtheorem{corollary}{Corollary}{\bfseries}{\itshape}
+\spn@wtheorem{definition}{Definition}{\bfseries}{\itshape}
+\spn@wtheorem{example}{Example}{\itshape}{\rmfamily}
+\spn@wtheorem{exercise}{Exercise}{\itshape}{\rmfamily}
+\spn@wtheorem{lemma}{Lemma}{\bfseries}{\itshape}
+\spn@wtheorem{note}{Note}{\itshape}{\rmfamily}
+\spn@wtheorem{problem}{Problem}{\itshape}{\rmfamily}
+\spn@wtheorem{property}{Property}{\itshape}{\rmfamily}
+\spn@wtheorem{proposition}{Proposition}{\bfseries}{\itshape}
+\spn@wtheorem{question}{Question}{\itshape}{\rmfamily}
+\spn@wtheorem{solution}{Solution}{\itshape}{\rmfamily}
+\spn@wtheorem{remark}{Remark}{\itshape}{\rmfamily}
+
+\def\@takefromreset#1#2{%
+    \def\@tempa{#1}%
+    \let\@tempd\@elt
+    \def\@elt##1{%
+        \def\@tempb{##1}%
+        \ifx\@tempa\@tempb\else
+            \@addtoreset{##1}{#2}%
+        \fi}%
+    \expandafter\expandafter\let\expandafter\@tempc\csname cl@#2\endcsname
+    \expandafter\def\csname cl@#2\endcsname{}%
+    \@tempc
+    \let\@elt\@tempd}
+
+\def\theopargself{\def\@spopargbegintheorem##1##2##3##4##5{\trivlist
+      \item[\hskip\labelsep{##4##1\ ##2}]{##4##3\@thmcounterend\ }##5}
+                  \def\@Opargbegintheorem##1##2##3##4{##4\trivlist
+      \item[\hskip\labelsep{##3##1}]{##3##2\@thmcounterend\ }}
+      }
+
+\renewenvironment{abstract}{%
+      \list{}{\advance\topsep by0.35cm\relax\small
+      \leftmargin=1cm
+      \labelwidth=\z@
+      \listparindent=\z@
+      \itemindent\listparindent
+      \rightmargin\leftmargin}\item[\hskip\labelsep
+                                    \bfseries\abstractname]}
+    {\endlist}
+
+\newdimen\headlineindent             % dimension for space between
+\headlineindent=1.166cm              % number and text of headings.
+
+\def\ps@headings{\let\@mkboth\@gobbletwo
+   \let\@oddfoot\@empty\let\@evenfoot\@empty
+   \def\@evenhead{\normalfont\small\rlap{\thepage}\hspace{\headlineindent}%
+                  \leftmark\hfil}
+   \def\@oddhead{\normalfont\small\hfil\rightmark\hspace{\headlineindent}%
+                 \llap{\thepage}}
+   \def\chaptermark##1{}%
+   \def\sectionmark##1{}%
+   \def\subsectionmark##1{}}
+
+\def\ps@titlepage{\let\@mkboth\@gobbletwo
+   \let\@oddfoot\@empty\let\@evenfoot\@empty
+   \def\@evenhead{\normalfont\small\rlap{\thepage}\hspace{\headlineindent}%
+                  \hfil}
+   \def\@oddhead{\normalfont\small\hfil\hspace{\headlineindent}%
+                 \llap{\thepage}}
+   \def\chaptermark##1{}%
+   \def\sectionmark##1{}%
+   \def\subsectionmark##1{}}
+
+\if@runhead\ps@headings\else
+\ps@empty\fi
+
+\setlength\arraycolsep{1.4\p@}
+\setlength\tabcolsep{1.4\p@}
+
+\endinput
+%end of file llncs.cls
diff --git a/llncsdoc.pdf b/llncsdoc.pdf
new file mode 100644
index 0000000..e2f638a
Binary files /dev/null and b/llncsdoc.pdf differ
diff --git a/readme.txt b/readme.txt
new file mode 100644
index 0000000..32f7aec
--- /dev/null
+++ b/readme.txt
@@ -0,0 +1,20 @@
+Dear llncs user,
+
+The files in this directory belong to the LaTeX2e package 
+for Springer's Lecture Notes in Computer Science (LNCS) and 
+other proceedings book series.
+
+It consists of the following files:
+
+  readme.txt         this file
+
+  history.txt        the version history of the package
+
+  llncs.cls          the LaTeX2e document class
+
+  samplepaper.tex    a sample paper
+  fig1.eps           a figure used in the sample paper
+
+  llncsdoc.pdf       the documentation of the class (PDF version)
+
+  splncs04.bst       current LNCS BibTeX style with alphabetic sorting
diff --git a/samplepaper.aux b/samplepaper.aux
new file mode 100644
index 0000000..f24201f
--- /dev/null
+++ b/samplepaper.aux
@@ -0,0 +1,38 @@
+\relax 
+\@writefile{toc}{\contentsline {title}{Search for Structurally Similar Projects of Software Systems}{1}{}\protected@file@percent }
+\@writefile{toc}{\authcount {2}}
+\@writefile{toc}{\contentsline {author}{Aleksey Filippov \and Julia Stroeva}{1}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {1}Introduction}{1}{}\protected@file@percent }
+\citation{nguyen2018crosssim}
+\citation{aleksey2020approach,beniwal2021npmrec,nadezhda2019approach,nguyen2018crosssim,nguyen2020automated}
+\citation{ali2011overview}
+\citation{chae2013software}
+\@writefile{toc}{\contentsline {section}{\numberline {2}State of the art}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {3}The Proposed Algorithm for Analyzing the Structure of the Source Code}{2}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {4}The Proposed Algorithm for Determining the Structural Similarity of Software Projects}{3}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {5}State of the art}{3}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {5.1}A Subsection Sample}{3}{}\protected@file@percent }
+\@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces Sample source code and its AST.}}{4}{}\protected@file@percent }
+\newlabel{fig1}{{1}{4}}
+\@writefile{toc}{\contentsline {subsubsection}{Sample Heading (Third Level)}{4}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {paragraph}{Sample Heading (Fourth Level)}{4}{}\protected@file@percent }
+\@writefile{lot}{\contentsline {table}{\numberline {1}{\ignorespaces Table captions should be placed above the tables.}}{4}{}\protected@file@percent }
+\newlabel{tab1}{{1}{4}}
+\citation{Reviewer-Recommender}
+\citation{ref_lncs1}
+\citation{ref_book1}
+\citation{ref_proc1}
+\citation{ref_url1}
+\citation{ref_article1,ref_lncs1,ref_book1}
+\citation{ref_article1,ref_book1,ref_proc1,ref_url1}
+\bibstyle{splncs04}
+\bibdata{samplepaper}
+\bibcite{aleksey2020approach}{1}
+\bibcite{ali2011overview}{2}
+\bibcite{beniwal2021npmrec}{3}
+\bibcite{chae2013software}{4}
+\bibcite{nadezhda2019approach}{5}
+\bibcite{nguyen2018crosssim}{6}
+\bibcite{nguyen2020automated}{7}
+\@writefile{toc}{\contentsline {subsubsection}{Acknowledgements}{5}{}\protected@file@percent }
+\gdef \@abspage@last{5}
diff --git a/samplepaper.bbl b/samplepaper.bbl
new file mode 100644
index 0000000..bd14624
--- /dev/null
+++ b/samplepaper.bbl
@@ -0,0 +1,47 @@
+\begin{thebibliography}{1}
+\providecommand{\url}[1]{\texttt{#1}}
+\providecommand{\urlprefix}{URL }
+\providecommand{\doi}[1]{https://doi.org/#1}
+
+\bibitem{aleksey2020approach}
+Aleksey~Alekundrovich, F., Yurevich, G.G., Aleksey~Michailovich, N.,
+  Nudezhda~Glebovna, Y.: Approach to the search for software projects similar
+  in structure and semantics based on the knowledge extracted from existed
+  projects. In: Computational Science and Its Applications--ICCSA 2020: 20th
+  International Conference, Cagliari, Italy, July 1--4, 2020, Proceedings, Part
+  I. pp. 718--733. Springer (2020)
+
+\bibitem{ali2011overview}
+Ali, A.M.E.T., Abdulla, H.M.D., Snasel, V.: Overview and comparison of
+  plagiarism detection tools. In: Dateso. pp. 161--172 (2011)
+
+\bibitem{beniwal2021npmrec}
+Beniwal, R., Dahiya, S., Kumar, D., Yadav, D., Pal, D.: Npmrec: Npm packages
+  and similar projects recommendation system. In: Data Analytics and
+  Management: Proceedings of ICDAM. pp. 701--710. Springer (2021)
+
+\bibitem{chae2013software}
+Chae, D.K., Ha, J., Kim, S.W., Kang, B., Im, E.G.: Software plagiarism
+  detection: a graph-based approach. In: Proceedings of the 22nd ACM
+  international conference on Information \& Knowledge Management. pp.
+  1577--1580 (2013)
+
+\bibitem{nadezhda2019approach}
+Nadezhda, Y., Gleb, G., Pavel, D., Vladimir, S.: An approach to similar
+  software projects searching and architecture analysis based on artificial
+  intelligence methods. In: Proceedings of the Third International Scientific
+  Conference “Intelligent Information Technologies for Industry”(IITI’18)
+  Volume 1 3. pp. 341--352. Springer (2019)
+
+\bibitem{nguyen2018crosssim}
+Nguyen, P.T., Di~Rocco, J., Rubei, R., Di~Ruscio, D.: Crosssim: exploiting
+  mutual relationships to detect similar oss projects. In: 2018 44th Euromicro
+  conference on software engineering and advanced applications (SEAA). pp.
+  388--395. IEEE (2018)
+
+\bibitem{nguyen2020automated}
+Nguyen, P.T., Di~Rocco, J., Rubei, R., Di~Ruscio, D.: An automated approach to
+  assess the similarity of github repositories. Software Quality Journal
+  \textbf{28},  595--631 (2020)
+
+\end{thebibliography}
diff --git a/samplepaper.bib b/samplepaper.bib
new file mode 100644
index 0000000..703be6c
--- /dev/null
+++ b/samplepaper.bib
@@ -0,0 +1,55 @@
+@inproceedings{nguyen2018crosssim,
+  title={CrossSim: exploiting mutual relationships to detect similar OSS projects},
+  author={Nguyen, Phuong T and Di Rocco, Juri and Rubei, Riccardo and Di Ruscio, Davide},
+  booktitle={2018 44th Euromicro conference on software engineering and advanced applications (SEAA)},
+  pages={388--395},
+  year={2018},
+  organization={IEEE}
+}
+@article{nguyen2020automated,
+  title={An automated approach to assess the similarity of GitHub repositories},
+  author={Nguyen, Phuong T and Di Rocco, Juri and Rubei, Riccardo and Di Ruscio, Davide},
+  journal={Software Quality Journal},
+  volume={28},
+  pages={595--631},
+  year={2020},
+  publisher={Springer}
+}
+@inproceedings{nadezhda2019approach,
+  title={An approach to similar software projects searching and architecture analysis based on artificial intelligence methods},
+  author={Nadezhda, Yarushkina and Gleb, Guskov and Pavel, Dudarin and Vladimir, Stuchebnikov},
+  booktitle={Proceedings of the Third International Scientific Conference “Intelligent Information Technologies for Industry”(IITI’18) Volume 1 3},
+  pages={341--352},
+  year={2019},
+  organization={Springer}
+}
+@inproceedings{beniwal2021npmrec,
+  title={NPMREC: NPM Packages and Similar Projects Recommendation System},
+  author={Beniwal, Rohit and Dahiya, Sonika and Kumar, Deepak and Yadav, Deepak and Pal, Deepanshu},
+  booktitle={Data Analytics and Management: Proceedings of ICDAM},
+  pages={701--710},
+  year={2021},
+  organization={Springer}
+}
+@inproceedings{aleksey2020approach,
+  title={Approach to the Search for Software Projects Similar in Structure and Semantics Based on the Knowledge Extracted from Existed Projects},
+  author={Aleksey Alekundrovich, Filippov and Yurevich, Guskov Gleb and Aleksey Michailovich, Namestnikov and Nudezhda Glebovna, Yarushkina},
+  booktitle={Computational Science and Its Applications--ICCSA 2020: 20th International Conference, Cagliari, Italy, July 1--4, 2020, Proceedings, Part I},
+  pages={718--733},
+  year={2020},
+  organization={Springer}
+}
+@inproceedings{ali2011overview,
+  title={Overview and comparison of plagiarism detection tools.},
+  author={Ali, Asim M El Tahir and Abdulla, Hussam M Dahwa and Snasel, Vaclav},
+  booktitle={Dateso},
+  pages={161--172},
+  year={2011}
+}
+@inproceedings{chae2013software,
+  title={Software plagiarism detection: a graph-based approach},
+  author={Chae, Dong-Kyu and Ha, Jiwoon and Kim, Sang-Wook and Kang, BooJoong and Im, Eul Gyu},
+  booktitle={Proceedings of the 22nd ACM international conference on Information \& Knowledge Management},
+  pages={1577--1580},
+  year={2013}
+}
\ No newline at end of file
diff --git a/samplepaper.blg b/samplepaper.blg
new file mode 100644
index 0000000..5160a8a
--- /dev/null
+++ b/samplepaper.blg
@@ -0,0 +1,53 @@
+This is BibTeX, Version 0.99d (TeX Live 2022)
+Capacity: max_strings=200000, hash_size=200000, hash_prime=170003
+The top-level auxiliary file: samplepaper.aux
+The style file: splncs04.bst
+Database file #1: samplepaper.bib
+Warning--I didn't find a database entry for "Reviewer-Recommender"
+Warning--I didn't find a database entry for "ref_lncs1"
+Warning--I didn't find a database entry for "ref_book1"
+Warning--I didn't find a database entry for "ref_proc1"
+Warning--I didn't find a database entry for "ref_url1"
+Warning--I didn't find a database entry for "ref_article1"
+You've used 7 entries,
+            2850 wiz_defined-function locations,
+            643 strings with 6417 characters,
+and the built_in function-call counts, 5015 in all, are:
+= -- 449
+> -- 159
+< -- 8
++ -- 67
+- -- 58
+* -- 307
+:= -- 625
+add.period$ -- 17
+call.type$ -- 7
+change.case$ -- 62
+chr.to.int$ -- 0
+cite$ -- 7
+duplicate$ -- 414
+empty$ -- 438
+format.name$ -- 65
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+int.to.chr$ -- 0
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+num.names$ -- 14
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+preamble$ -- 1
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+stack$ -- 0
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+swap$ -- 231
+text.length$ -- 8
+text.prefix$ -- 0
+top$ -- 0
+type$ -- 28
+warning$ -- 0
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+width$ -- 8
+write$ -- 79
+(There were 6 warnings)
diff --git a/samplepaper.fdb_latexmk b/samplepaper.fdb_latexmk
new file mode 100644
index 0000000..5ef311b
--- /dev/null
+++ b/samplepaper.fdb_latexmk
@@ -0,0 +1,82 @@
+# Fdb version 3
+["bibtex samplepaper"] 1680773656 "samplepaper.aux" "samplepaper.bbl" "samplepaper" 1680773658
+  "./splncs04.bst" 1521100946 33694 ee21ae2a29028dc8ad842a97200982c7 ""
+  "samplepaper.aux" 1680773658 2362 f6a538eedc01c74f2e62733fa0a53b0d "pdflatex"
+  "samplepaper.bib" 1680767232 2675 31c6b7eaccded9d7e7d5c4199d50efdd ""
+  (generated)
+  "samplepaper.bbl"
+  "samplepaper.blg"
+["pdflatex"] 1680773656 "c:/Users/stroe/OneDrive/Рабочий стол/LaTeX2e+Proceedings+Templates+download/samplepaper.tex" "samplepaper.pdf" "samplepaper" 1680773658
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+% This is samplepaper.tex, a sample chapter demonstrating the
+% LLNCS macro package for Springer Computer Science proceedings;
+% Version 2.21 of 2022/01/12
+%
+\documentclass[runningheads]{llncs}
+%
+\usepackage[T1]{fontenc}
+% T1 fonts will be used to generate the final print and online PDFs,
+% so please use T1 fonts in your manuscript whenever possible.
+% Other font encondings may result in incorrect characters.
+%
+\usepackage{amsmath}
+\usepackage{graphicx}
+% Used for displaying a sample figure. If possible, figure files should
+% be included in EPS format.
+%
+% If you use the hyperref package, please uncomment the following two lines
+% to display URLs in blue roman font according to Springer's eBook style:
+%\usepackage{color}
+%\renewcommand\UrlFont{\color{blue}\rmfamily}
+%
+\begin{document}
+%
+\title{Search for Structurally Similar Projects of Software Systems}
+%
+%\titlerunning{Abbreviated paper title}
+% If the paper title is too long for the running head, you can set
+% an abbreviated paper title here
+%
+\author{Aleksey	Filippov\inst{1}\orcidID{0000-0003-0008-5035} \and
+Julia Stroeva\inst{1}\orcidID{0009-0003-8026-235X}}
+%
+\authorrunning{A. Filippov, J. Stroeva}
+% First names are abbreviated in the running head.
+% If there are more than two authors, 'et al.' is used.
+%
+\institute{Department of Information Systems, Ulyanovsk State 
+Technical University, 32 Severny Venetz Street, 432027 Ulyanovsk, Russia}
+%
+\maketitle              % typeset the header of the contribution
+%
+\begin{abstract}
+    The authors have developed an approach to the search for structurally similar projects of software systems. Teachers can use the proposed approach to search for borrowings in the works of students.    The concept behind this proposal is that it can to locate projects that students have used as parts of a current project.
+
+    The authors propose a new algorithm for determining the similarity between the structures of software projects. The proposed algorithm is based on finding similar structural elements in the source code of the program in an abstract syntax trees analyzing.
+
+    The authors developed a software system to evaluate the proposed algorithm. The current version of the system only supports Java programs. However, the system operates with its own representation of the abstract syntax tree, which allows you to add support for new programming languages.
+
+\keywords{source code \and structure analysis \and structurally similar projects \and hashing.}
+\end{abstract}
+%
+%
+%
+\section{Introduction}
+Currently, the most practical work of students in information technology includes laboratory and coursework. These classes help students understand the theoretical information from their lectures.
+
+Typically, student work is a small program that solves typical problems. In most cases, these works contain few files or a few lines of code. The architecture and algorithms of such programs are also simple.
+
+The teacher needs to spend many time to check all the work. The teacher usually notices when the student has borrowed a program source code. Students in such cases do not change the structure of the borrowed source code, but rename variables or change types of loops (from \textit{for} to \textit{while}), etc.
+
+The software system proposed in this article allows you to analyze the structure of projects and provide information about their structural similarity. The indicator of the uniqueness of the current project structure is used to evaluate the uniqueness of the project in comparison with other projects.
+
+\section{State of the art}
+
+There are no universal methods for analyzing the source code of software systems at the moment. Certain methods of analysis are used to solve various problems.
+
+There is a group of methods for analyzing source code, which is based on obtaining and analyzing abstract syntax trees (AST). An AST is an abstract representation of the grammatical structure of a source code. It expresses the structure of a program in some programming language as a tree structure. Each AST node is an operator or a set of operators of the analyzed source code. The compiler generates an AST because of the parsing step. Unlike a parse tree, an AST does not have nodes or edges for syntax rules that do not affect the semantics of the program (for example, grouping brackets).
+
+It can also analyze projects using call graph generation tools, such as \textit{CodeViz} or \textit{Egypt}. It is possible to use some functions of reverse engineering tools, such as IDA Pro.
+
+AST-based approaches can find structurally similar projects. However, such approaches have high computational complexity \cite{nguyen2018crosssim}. Many existing approaches analyze a larger number of parameters than is necessary to solve the problem of this study \cite{aleksey2020approach,beniwal2021npmrec,nadezhda2019approach,nguyen2018crosssim,nguyen2020automated}: project dependencies, the number of stars in the repository, the contents of the documentation, etc.
+
+The paper \cite{ali2011overview} presents an analysis of approaches and software tools for searching for borrowings in the text and source code. However, there is no mention of software tools for searching for borrowings in the source code.
+
+In the article \cite{chae2013software}, the authors analyze borrowings in the source code according to the sequences of using external programming interfaces and the frequency of such calls. This method is not suitable for solving the problem of this study because of the educational orientation of the analyzed source code.
+
+Thus, it is necessary to develop an approach to the search for structurally similar projects, which are focused on working with simple software systems and with a high speed of analysis.
+
+\section{The Proposed Algorithm for Analyzing the Structure of the Source Code}
+
+The source code of the software system in the proposed algorithm is the main source of data for identifying structural features. 
+
+We formed an AST to analyze the source code. There are various libraries and tools for all existing programming languages for the formation of AST. Thus, using your own representation of the AST allows you to add support for new programming languages to the system without changing the analysis algorithms.
+
+We will use the following AST model:
+
+\begin{equation*}    
+    AST = \langle N,R \rangle,
+\end{equation*}
+
+where $N = \lbrace N_{1}, N_{2},\ldots, N_{n}\rbrace$ is the set of nodes AST;
+
+$N_{i} = \langle name, data \rangle$ is an i-th AST node containing the node name, node data;
+
+R is the set of relations between AST nodes.
+
+We developed an algorithm to highlight the structure of the project in analyzing the source code, which comprises the following steps:
+
+\begin{enumerate}
+    \item Form an ASD for the project.
+    \item Select nodes with type “Class”: 
+    \begin{equation*}    
+        N^{Class} = \lbrace N_{i} \in N | F \left( N_{i}.data \right) = \text{'Class'} \rbrace,
+    \end{equation*}
+    \item Find nodes with the “Class field” type in the found classes: 
+    \begin{equation*}    
+        N^{Vars} = \lbrace N_{i}^{Class} \in N^{Class} | F \left( N_{i}^{Class}.data \right) = \text{'Field'} \rbrace,
+    \end{equation*}
+    \item Find nodes with the “Methods” type in the found classes: 
+    \begin{equation*}    
+        N^{Methods} = \lbrace N_{i}^{Class} \in N^{Class} | F \left( N_{i}^{Class}.data \right) = \text{'Method'} \rbrace,
+    \end{equation*}
+    \item Find nodes with type “Method Argument” in the found methods: 
+    \begin{equation*}    
+        N^{MethodsArgs} = \lbrace N_{i}^{Methods} \in N^{Methods} | F \left( N_{i}^{Methods}.data \right) = \text{'Arg'} \rbrace,
+    \end{equation*}
+    \item Find nodes with the type “Operator” in the found methods: 
+    \begin{equation*}    
+        N^{MethodsOps} = \lbrace N_{i}^{Methods} \in N^{Methods} | F \left( N_{i}^{Methods}.data \right) = \text{'Operator'} \rbrace,
+    \end{equation*}
+    \item Create based on previously got sets of AST for the analyzed source code, considering the set of relations R.
+    \item Save the resulting AST in a graph database (GDB) to facilitate data handling. 
+\end{enumerate}
+
+Figure \ref{fig1} shows an example of the source code and the ASD got for it.
+
+\begin{figure}
+    \includegraphics[width=\textwidth]{SourceCodeAndAST.png}
+    \caption{Sample source code and its AST.} \label{fig1}
+\end{figure}
+
+GDB is a non-relational type of database based on the topographic structure of the network. Graphs represent sets of data as nodes, edges, and properties. Relational databases provide a structured approach to data. GDBs are more flexible and focused on fast data acquisition, considering various types of links between them.
+
+We used Neo4j as the GDB, since this system has a high speed of operation even with a large amount of stored data.
+
+\section{The Proposed Algorithm for Determining the Structural Similarity of Software Projects}
+
+
+
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+% -----------------------------------------
+
+\section{State of the art}
+\subsection{A Subsection Sample}
+Please note that the first paragraph of a section or subsection is
+not indented. The first paragraph that follows a table, figure,
+equation etc. does not need an indent, either.
+
+Subsequent paragraphs, however, are indented.
+
+\subsubsection{Sample Heading (Third Level)} Only two levels of
+headings should be numbered. Lower level headings remain unnumbered;
+they are formatted as run-in headings.
+
+\paragraph{Sample Heading (Fourth Level)}
+The contribution should contain no more than four levels of
+headings. Table~\ref{tab1} gives a summary of all heading levels.
+
+% \begin{figure}
+    
+% \end{figure}
+
+\begin{table}
+\caption{Table captions should be placed above the
+tables.}\label{tab1}
+\begin{tabular}{|l|l|l|}
+\hline
+Heading level &  Example & Font size and style\\
+\hline
+Title (centered) &  {\Large\bfseries Lecture Notes} & 14 point, bold\\
+1st-level heading &  {\large\bfseries 1 Introduction} & 12 point, bold\\
+2nd-level heading & {\bfseries 2.1 Printing Area} & 10 point, bold\\
+3rd-level heading & {\bfseries Run-in Heading in Bold.} Text follows & 10 point, bold\\
+4th-level heading & {\itshape Lowest Level Heading.} Text follows & 10 point, italic\\
+\hline
+\end{tabular}
+\end{table}
+
+\begin{itemize}
+    \item 
+\end{itemize}
+
+\begin{enumerate}
+    \item 
+\end{enumerate}
+
+
+\noindent Displayed equations are centered and set on a separate
+line.
+\begin{equation*}    
+N^{Class} = \lbrace N_{i} \in N | F \left( N_{i}.data \right) = \text{'Class'} \rbrace,
+\end{equation*}
+Please try to avoid rasterized images for line-art diagrams and
+schemas. Whenever possible, use vector graphics instead (see
+Fig.~\ref{fig1}).
+
+% \begin{figure}
+% \includegraphics[width=\textwidth]{fig1.eps}
+% \caption{A figure caption is always placed below the illustration.
+% Please note that short captions are centered, while long ones are
+% justified by the macro package automatically.} \label{fig1}
+% \end{figure}
+
+\begin{theorem}
+This is a sample theorem. The run-in heading is set in bold, while
+the following text appears in italics. Definitions, lemmas,
+propositions, and corollaries are styled the same way.
+\end{theorem}
+%
+% the environments 'definition', 'lemma', 'proposition', 'corollary',
+% 'remark', and 'example' are defined in the LLNCS documentclass as well.
+%
+\begin{proof}
+Proofs, examples, and remarks have the initial word in italics,
+while the following text appears in normal font.
+\end{proof}
+For citations of references, we prefer the use of square brackets and consecutive numbers. Citations using labels or the author/year convention  are also acceptable. The following bibliography provides a sample reference list with entries for journal
+articles~\cite{Reviewer-Recommender}, an LNCS chapter~\cite{ref_lncs1}, a
+book~\cite{ref_book1}, proceedings without editors~\cite{ref_proc1},
+and a homepage~\cite{ref_url1}. Multiple citations are grouped
+\cite{ref_article1,ref_lncs1,ref_book1},
+\cite{ref_article1,ref_book1,ref_proc1,ref_url1}.
+
+\subsubsection{Acknowledgements} Please place your acknowledgments at
+the end of the paper, preceded by an unnumbered run-in heading (i.e.
+3rd-level heading).
+
+%
+% ---- Bibliography ----
+%
+% BibTeX users should specify bibliography style 'splncs04'.
+% References will then be sorted and formatted in the correct style.
+%
+\bibliographystyle{splncs04}
+\bibliography{samplepaper}
+%
+% \begin{thebibliography}{8}
+% \bibitem{ref_article1}
+% Author, F.: Article title. Journal \textbf{2}(5), 99--110 (2016)
+
+% \bibitem{ref_lncs1}
+% Author, F., Author, S.: Title of a proceedings paper. In: Editor,
+% F., Editor, S. (eds.) CONFERENCE 2016, LNCS, vol. 9999, pp. 1--13.
+% Springer, Heidelberg (2016). \doi{10.10007/1234567890}
+
+% \bibitem{ref_book1}
+% Author, F., Author, S., Author, T.: Book title. 2nd edn. Publisher,
+% Location (1999)
+
+% \bibitem{ref_proc1}
+% Author, A.-B.: Contribution title. In: 9th International Proceedings
+% on Proceedings, pp. 1--2. Publisher, Location (2010)
+
+% \bibitem{ref_url1}
+% LNCS Homepage, \url{http://www.springer.com/lncs}. Last accessed 4
+% Oct 2017
+% \end{thebibliography}
+\end{document}
diff --git a/splncs04.bst b/splncs04.bst
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+++ b/splncs04.bst
@@ -0,0 +1,1548 @@
+%% BibTeX bibliography style `splncs03'
+%%
+%% BibTeX bibliography style for use with numbered references in
+%% Springer Verlag's "Lecture Notes in Computer Science" series.
+%% (See Springer's documentation for llncs.cls for
+%% more details of the suggested reference format.)  Note that this
+%% file will not work for author-year style citations.
+%%
+%% Use \documentclass{llncs} and \bibliographystyle{splncs03}, and cite
+%% a reference with (e.g.) \cite{smith77} to get a "[1]" in the text.
+%%
+%% This file comes to you courtesy of Maurizio "Titto" Patrignani of
+%% Dipartimento di Informatica e Automazione Universita' Roma Tre
+%%
+%% ================================================================================================
+%% This was file `titto-lncs-02.bst' produced on Wed Apr 1, 2009
+%% Edited by hand by titto based on `titto-lncs-01.bst' (see below)
+%%
+%% CHANGES (with respect to titto-lncs-01.bst):
+%% - Removed the call to \urlprefix (thus no "URL" string is added to the output)
+%% ================================================================================================
+%% This was file `titto-lncs-01.bst' produced on Fri Aug 22, 2008
+%% Edited by hand by titto based on `titto.bst' (see below)
+%%
+%% CHANGES (with respect to titto.bst):
+%% - Removed the "capitalize" command for editors string "(eds.)" and "(ed.)"
+%% - Introduced the functions titto.bbl.pages and titto.bbl.page for journal pages (without "pp.")
+%% - Added a new.sentence command to separate with a dot booktitle and series in the inproceedings
+%% - Commented all new.block commands before urls and notes (to separate them with a comma)
+%% - Introduced the functions titto.bbl.volume for handling journal volumes (without "vol." label)
+%% - Used for editors the same name conventions used for authors (see function format.in.ed.booktitle)
+%% - Removed a \newblock to avoid long spaces between title and "In: ..."
+%% - Added function titto.space.prefix to add a space instead of "~" after the (removed) "vol." label
+%% - Added doi
+%% ================================================================================================
+%% This was file `titto.bst',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% merlin.mbs  (with options: `vonx,nm-rvvc,yr-par,jttl-rm,volp-com,jwdpg,jwdvol,numser,ser-vol,jnm-x,btit-rm,bt-rm,edparxc,bkedcap,au-col,in-col,fin-bare,pp,ed,abr,mth-bare,xedn,jabr,and-com,and-com-ed,xand,url,url-blk,em-x,nfss,')
+%% ----------------------------------------
+%% *** Tentative .bst file for Springer LNCS ***
+%%
+%% Copyright 1994-2007 Patrick W Daly
+ % ===============================================================
+ % IMPORTANT NOTICE:
+ % This bibliographic style (bst) file has been generated from one or
+ % more master bibliographic style (mbs) files, listed above.
+ %
+ % This generated file can be redistributed and/or modified under the terms
+ % of the LaTeX Project Public License Distributed from CTAN
+ % archives in directory macros/latex/base/lppl.txt; either
+ % version 1 of the License, or any later version.
+ % ===============================================================
+ % Name and version information of the main mbs file:
+ % \ProvidesFile{merlin.mbs}[2007/04/24 4.20 (PWD, AO, DPC)]
+ %   For use with BibTeX version 0.99a or later
+ %-------------------------------------------------------------------
+ % This bibliography style file is intended for texts in ENGLISH
+ % This is a numerical citation style, and as such is standard LaTeX.
+ % It requires no extra package to interface to the main text.
+ % The form of the \bibitem entries is
+ %   \bibitem{key}...
+ % Usage of \cite is as follows:
+ %   \cite{key} ==>>          [#]
+ %   \cite[chap. 2]{key} ==>> [#, chap. 2]
+ % where # is a number determined by the ordering in the reference list.
+ % The order in the reference list is alphabetical by authors.
+ %---------------------------------------------------------------------
+
+ENTRY
+  { address
+    author
+    booktitle
+    chapter
+    doi
+    edition
+    editor
+    eid
+    howpublished
+    institution
+    journal
+    key
+    month
+    note
+    number
+    organization
+    pages
+    publisher
+    school
+    series
+    title
+    type
+    url
+    volume
+    year
+  }
+  {}
+  { label }
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+FUNCTION {init.state.consts}
+{ #0 'before.all :=
+  #1 'mid.sentence :=
+  #2 'after.sentence :=
+  #3 'after.block :=
+}
+STRINGS { s t}
+FUNCTION {output.nonnull}
+{ 's :=
+  output.state mid.sentence =
+    { ", " * write$ }
+    { output.state after.block =
+        { add.period$ write$
+%          newline$
+%          "\newblock " write$  % removed for titto-lncs-01
+          " " write$            % to avoid long spaces between title and "In: ..."
+        }
+        { output.state before.all =
+            'write$
+            { add.period$ " " * write$ }
+          if$
+        }
+      if$
+      mid.sentence 'output.state :=
+    }
+  if$
+  s
+}
+FUNCTION {output}
+{ duplicate$ empty$
+    'pop$
+    'output.nonnull
+  if$
+}
+FUNCTION {output.check}
+{ 't :=
+  duplicate$ empty$
+    { pop$ "empty " t * " in " * cite$ * warning$ }
+    'output.nonnull
+  if$
+}
+FUNCTION {fin.entry}
+{ duplicate$ empty$
+    'pop$
+    'write$
+  if$
+  newline$
+}
+
+FUNCTION {new.block}
+{ output.state before.all =
+    'skip$
+    { after.block 'output.state := }
+  if$
+}
+FUNCTION {new.sentence}
+{ output.state after.block =
+    'skip$
+    { output.state before.all =
+        'skip$
+        { after.sentence 'output.state := }
+      if$
+    }
+  if$
+}
+FUNCTION {add.blank}
+{  " " * before.all 'output.state :=
+}
+
+
+FUNCTION {add.colon}
+{ duplicate$ empty$
+    'skip$
+    { ":" * add.blank }
+  if$
+}
+
+FUNCTION {date.block}
+{
+  new.block
+}
+
+FUNCTION {not}
+{   { #0 }
+    { #1 }
+  if$
+}
+FUNCTION {and}
+{   'skip$
+    { pop$ #0 }
+  if$
+}
+FUNCTION {or}
+{   { pop$ #1 }
+    'skip$
+  if$
+}
+STRINGS {z}
+FUNCTION {remove.dots}
+{ 'z :=
+  ""
+  { z empty$ not }
+  { z #1 #1 substring$
+    z #2 global.max$ substring$ 'z :=
+    duplicate$ "." = 'pop$
+      { * }
+    if$
+  }
+  while$
+}
+FUNCTION {new.block.checka}
+{ empty$
+    'skip$
+    'new.block
+  if$
+}
+FUNCTION {new.block.checkb}
+{ empty$
+  swap$ empty$
+  and
+    'skip$
+    'new.block
+  if$
+}
+FUNCTION {new.sentence.checka}
+{ empty$
+    'skip$
+    'new.sentence
+  if$
+}
+FUNCTION {new.sentence.checkb}
+{ empty$
+  swap$ empty$
+  and
+    'skip$
+    'new.sentence
+  if$
+}
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+    { pop$ "" }
+    'skip$
+  if$
+}
+FUNCTION {emphasize}
+{ skip$ }
+
+FUNCTION {embolden}
+{ duplicate$ empty$
+{ pop$ "" }
+{ "\textbf{" swap$ * "}" * }
+if$
+}
+FUNCTION {tie.or.space.prefix}
+{ duplicate$ text.length$ #5 <
+    { "~" }
+    { " " }
+  if$
+  swap$
+}
+FUNCTION {titto.space.prefix} %  always introduce a space
+{ duplicate$ text.length$ #3 <
+    { " " }
+    { " " }
+  if$
+  swap$
+}
+
+
+FUNCTION {capitalize}
+{ "u" change.case$ "t" change.case$ }
+
+FUNCTION {space.word}
+{ " " swap$ * " " * }
+ % Here are the language-specific definitions for explicit words.
+ % Each function has a name bbl.xxx where xxx is the English word.
+ % The language selected here is ENGLISH
+FUNCTION {bbl.and}
+{ "and"}
+
+FUNCTION {bbl.etal}
+{ "et~al." }
+
+FUNCTION {bbl.editors}
+{ "eds." }
+
+FUNCTION {bbl.editor}
+{ "ed." }
+
+FUNCTION {bbl.edby}
+{ "edited by" }
+
+FUNCTION {bbl.edition}
+{ "edn." }
+
+FUNCTION {bbl.volume}
+{ "vol." }
+
+FUNCTION {titto.bbl.volume} % for handling journals
+{ "" }
+
+FUNCTION {bbl.of}
+{ "of" }
+
+FUNCTION {bbl.number}
+{ "no." }
+
+FUNCTION {bbl.nr}
+{ "no." }
+
+FUNCTION {bbl.in}
+{ "in" }
+
+FUNCTION {bbl.pages}
+{ "pp." }
+
+FUNCTION {bbl.page}
+{ "p." }
+
+FUNCTION {titto.bbl.pages} % for journals
+{ "" }
+
+FUNCTION {titto.bbl.page}  % for journals
+{ "" }
+
+FUNCTION {bbl.chapter}
+{ "chap." }
+
+FUNCTION {bbl.techrep}
+{ "Tech. Rep." }
+
+FUNCTION {bbl.mthesis}
+{ "Master's thesis" }
+
+FUNCTION {bbl.phdthesis}
+{ "Ph.D. thesis" }
+
+MACRO {jan} {"Jan."}
+
+MACRO {feb} {"Feb."}
+
+MACRO {mar} {"Mar."}
+
+MACRO {apr} {"Apr."}
+
+MACRO {may} {"May"}
+
+MACRO {jun} {"Jun."}
+
+MACRO {jul} {"Jul."}
+
+MACRO {aug} {"Aug."}
+
+MACRO {sep} {"Sep."}
+
+MACRO {oct} {"Oct."}
+
+MACRO {nov} {"Nov."}
+
+MACRO {dec} {"Dec."}
+
+MACRO {acmcs} {"ACM Comput. Surv."}
+
+MACRO {acta} {"Acta Inf."}
+
+MACRO {cacm} {"Commun. ACM"}
+
+MACRO {ibmjrd} {"IBM J. Res. Dev."}
+
+MACRO {ibmsj} {"IBM Syst.~J."}
+
+MACRO {ieeese} {"IEEE Trans. Software Eng."}
+
+MACRO {ieeetc} {"IEEE Trans. Comput."}
+
+MACRO {ieeetcad}
+ {"IEEE Trans. Comput. Aid. Des."}
+
+MACRO {ipl} {"Inf. Process. Lett."}
+
+MACRO {jacm} {"J.~ACM"}
+
+MACRO {jcss} {"J.~Comput. Syst. Sci."}
+
+MACRO {scp} {"Sci. Comput. Program."}
+
+MACRO {sicomp} {"SIAM J. Comput."}
+
+MACRO {tocs} {"ACM Trans. Comput. Syst."}
+
+MACRO {tods} {"ACM Trans. Database Syst."}
+
+MACRO {tog} {"ACM Trans. Graphic."}
+
+MACRO {toms} {"ACM Trans. Math. Software"}
+
+MACRO {toois} {"ACM Trans. Office Inf. Syst."}
+
+MACRO {toplas} {"ACM Trans. Progr. Lang. Syst."}
+
+MACRO {tcs} {"Theor. Comput. Sci."}
+
+FUNCTION {bibinfo.check}
+{ swap$
+  duplicate$ missing$
+    {
+      pop$ pop$
+      ""
+    }
+    { duplicate$ empty$
+        {
+          swap$ pop$
+        }
+        { swap$
+          pop$
+        }
+      if$
+    }
+  if$
+}
+FUNCTION {bibinfo.warn}
+{ swap$
+  duplicate$ missing$
+    {
+      swap$ "missing " swap$ * " in " * cite$ * warning$ pop$
+      ""
+    }
+    { duplicate$ empty$
+        {
+          swap$ "empty " swap$ * " in " * cite$ * warning$
+        }
+        { swap$
+          pop$
+        }
+      if$
+    }
+  if$
+}
+FUNCTION {format.url}
+{ url empty$
+    { "" }
+%    { "\urlprefix\url{" url * "}" * }
+    { "\url{" url * "}" * }  % changed in titto-lncs-02.bst
+  if$
+}
+
+FUNCTION {format.doi} % added in splncs04.bst
+{ doi empty$
+     { "" }
+     { after.block 'output.state :=
+       "\doi{" doi * "}" * }
+  if$
+}
+
+INTEGERS { nameptr namesleft numnames }
+
+
+STRINGS  { bibinfo}
+
+FUNCTION {format.names}
+{ 'bibinfo :=
+  duplicate$ empty$ 'skip$ {
+  's :=
+  "" 't :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { s nameptr
+      "{vv~}{ll}{, jj}{, f{.}.}"
+      format.name$
+      bibinfo bibinfo.check
+      't :=
+      nameptr #1 >
+        {
+          namesleft #1 >
+            { ", " * t * }
+            {
+              s nameptr "{ll}" format.name$ duplicate$ "others" =
+                { 't := }
+                { pop$ }
+              if$
+              "," *
+              t "others" =
+                {
+                  " " * bbl.etal *
+                }
+                { " " * t * }
+              if$
+            }
+          if$
+        }
+        't
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+  } if$
+}
+FUNCTION {format.names.ed}
+{
+  'bibinfo :=
+  duplicate$ empty$ 'skip$ {
+  's :=
+  "" 't :=
+  #1 'nameptr :=
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { s nameptr
+      "{f{.}.~}{vv~}{ll}{ jj}"
+      format.name$
+      bibinfo bibinfo.check
+      't :=
+      nameptr #1 >
+        {
+          namesleft #1 >
+            { ", " * t * }
+            {
+              s nameptr "{ll}" format.name$ duplicate$ "others" =
+                { 't := }
+                { pop$ }
+              if$
+              "," *
+              t "others" =
+                {
+
+                  " " * bbl.etal *
+                }
+                { " " * t * }
+              if$
+            }
+          if$
+        }
+        't
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+  } if$
+}
+FUNCTION {format.authors}
+{ author "author" format.names
+}
+FUNCTION {get.bbl.editor}
+{ editor num.names$ #1 > 'bbl.editors 'bbl.editor if$ }
+
+FUNCTION {format.editors}
+{ editor "editor" format.names duplicate$ empty$ 'skip$
+    {
+      " " *
+      get.bbl.editor
+%      capitalize
+   "(" swap$ * ")" *
+      *
+    }
+  if$
+}
+FUNCTION {format.note}
+{
+ note empty$
+    { "" }
+    { note #1 #1 substring$
+      duplicate$ "{" =
+        'skip$
+        { output.state mid.sentence =
+          { "l" }
+          { "u" }
+        if$
+        change.case$
+        }
+      if$
+      note #2 global.max$ substring$ * "note" bibinfo.check
+    }
+  if$
+}
+
+FUNCTION {format.title}
+{ title
+  duplicate$ empty$ 'skip$
+    { "t" change.case$ }
+  if$
+  "title" bibinfo.check
+}
+FUNCTION {output.bibitem}
+{ newline$
+  "\bibitem{" write$
+  cite$ write$
+  "}" write$
+  newline$
+  ""
+  before.all 'output.state :=
+}
+
+FUNCTION {n.dashify}
+{
+  't :=
+  ""
+    { t empty$ not }
+    { t #1 #1 substring$ "-" =
+        { t #1 #2 substring$ "--" = not
+            { "--" *
+              t #2 global.max$ substring$ 't :=
+            }
+            {   { t #1 #1 substring$ "-" = }
+                { "-" *
+                  t #2 global.max$ substring$ 't :=
+                }
+              while$
+            }
+          if$
+        }
+        { t #1 #1 substring$ *
+          t #2 global.max$ substring$ 't :=
+        }
+      if$
+    }
+  while$
+}
+
+FUNCTION {word.in}
+{ bbl.in capitalize
+  ":" *
+  " " * }
+
+FUNCTION {format.date}
+{
+  month "month" bibinfo.check
+  duplicate$ empty$
+  year  "year"  bibinfo.check duplicate$ empty$
+    { swap$ 'skip$
+        { "there's a month but no year in " cite$ * warning$ }
+      if$
+      *
+    }
+    { swap$ 'skip$
+        {
+          swap$
+          " " * swap$
+        }
+      if$
+      *
+      remove.dots
+    }
+  if$
+  duplicate$ empty$
+    'skip$
+    {
+      before.all 'output.state :=
+    " (" swap$ * ")" *
+    }
+  if$
+}
+FUNCTION {format.btitle}
+{ title "title" bibinfo.check
+  duplicate$ empty$ 'skip$
+    {
+    }
+  if$
+}
+FUNCTION {either.or.check}
+{ empty$
+    'pop$
+    { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+  if$
+}
+FUNCTION {format.bvolume}
+{ volume empty$
+    { "" }
+    { bbl.volume volume tie.or.space.prefix
+      "volume" bibinfo.check * *
+      series "series" bibinfo.check
+      duplicate$ empty$ 'pop$
+        { emphasize ", " * swap$ * }
+      if$
+      "volume and number" number either.or.check
+    }
+  if$
+}
+FUNCTION {format.number.series}
+{ volume empty$
+    { number empty$
+        { series field.or.null }
+        { output.state mid.sentence =
+            { bbl.number }
+            { bbl.number capitalize }
+          if$
+          number tie.or.space.prefix "number" bibinfo.check * *
+          series empty$
+            { "there's a number but no series in " cite$ * warning$ }
+            { bbl.in space.word *
+              series "series" bibinfo.check *
+            }
+          if$
+        }
+      if$
+    }
+    { "" }
+  if$
+}
+
+FUNCTION {format.edition}
+{ edition duplicate$ empty$ 'skip$
+    {
+      output.state mid.sentence =
+        { "l" }
+        { "t" }
+      if$ change.case$
+      "edition" bibinfo.check
+      " " * bbl.edition *
+    }
+  if$
+}
+INTEGERS { multiresult }
+FUNCTION {multi.page.check}
+{ 't :=
+  #0 'multiresult :=
+    { multiresult not
+      t empty$ not
+      and
+    }
+    { t #1 #1 substring$
+      duplicate$ "-" =
+      swap$ duplicate$ "," =
+      swap$ "+" =
+      or or
+        { #1 'multiresult := }
+        { t #2 global.max$ substring$ 't := }
+      if$
+    }
+  while$
+  multiresult
+}
+FUNCTION {format.pages}
+{ pages duplicate$ empty$ 'skip$
+    { duplicate$ multi.page.check
+        {
+          bbl.pages swap$
+          n.dashify
+        }
+        {
+          bbl.page swap$
+        }
+      if$
+      tie.or.space.prefix
+      "pages" bibinfo.check
+      * *
+    }
+  if$
+}
+FUNCTION {format.journal.pages}
+{ pages duplicate$ empty$ 'pop$
+    { swap$ duplicate$ empty$
+        { pop$ pop$ format.pages }
+        {
+          ", " *
+          swap$
+          n.dashify
+          pages multi.page.check
+            'titto.bbl.pages
+            'titto.bbl.page
+          if$
+          swap$ tie.or.space.prefix
+          "pages" bibinfo.check
+          * *
+          *
+        }
+      if$
+    }
+  if$
+}
+FUNCTION {format.journal.eid}
+{ eid "eid" bibinfo.check
+  duplicate$ empty$ 'pop$
+    { swap$ duplicate$ empty$ 'skip$
+      {
+          ", " *
+      }
+      if$
+      swap$ *
+    }
+  if$
+}
+FUNCTION {format.vol.num.pages} % this function is used only for journal entries
+{ volume field.or.null embolden
+  duplicate$ empty$ 'skip$
+    {
+%    bbl.volume swap$ tie.or.space.prefix
+     titto.bbl.volume swap$ titto.space.prefix
+%            rationale for the change above: for journals you don't want "vol." label
+%            hence it does not make sense to attach the journal number to the label when
+%            it is short
+      "volume" bibinfo.check
+      * *
+      }
+  if$
+  number "number" bibinfo.check duplicate$ empty$ 'skip$
+    {
+      swap$ duplicate$ empty$
+        { "there's a number but no volume in " cite$ * warning$ }
+        'skip$
+      if$
+      swap$
+      "(" swap$ * ")" *
+    }
+  if$ *
+  eid empty$
+    { format.journal.pages }
+    { format.journal.eid }
+  if$
+}
+
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+    'format.pages
+    { type empty$
+        { bbl.chapter }
+        { type "l" change.case$
+          "type" bibinfo.check
+        }
+      if$
+      chapter tie.or.space.prefix
+      "chapter" bibinfo.check
+      * *
+      pages empty$
+        'skip$
+        { ", " * format.pages * }
+      if$
+    }
+  if$
+}
+
+FUNCTION {format.booktitle}
+{
+  booktitle "booktitle" bibinfo.check
+}
+FUNCTION {format.in.ed.booktitle}
+{ format.booktitle duplicate$ empty$ 'skip$
+    {
+%     editor "editor" format.names.ed duplicate$ empty$ 'pop$ % changed by titto
+      editor "editor" format.names duplicate$ empty$ 'pop$
+        {
+          " " *
+          get.bbl.editor
+%          capitalize
+          "(" swap$ * ") " *
+          * swap$
+          * }
+      if$
+      word.in swap$ *
+    }
+  if$
+}
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+  month empty$ year empty$ note empty$
+  and and and and and
+  key empty$ not and
+    { "all relevant fields are empty in " cite$ * warning$ }
+    'skip$
+  if$
+}
+FUNCTION {format.thesis.type}
+{ type duplicate$ empty$
+    'pop$
+    { swap$ pop$
+      "t" change.case$ "type" bibinfo.check
+    }
+  if$
+}
+FUNCTION {format.tr.number}
+{ number "number" bibinfo.check
+  type duplicate$ empty$
+    { pop$ bbl.techrep }
+    'skip$
+  if$
+  "type" bibinfo.check
+  swap$ duplicate$ empty$
+    { pop$ "t" change.case$ }
+    { tie.or.space.prefix * * }
+  if$
+}
+FUNCTION {format.article.crossref}
+{
+  key duplicate$ empty$
+    { pop$
+      journal duplicate$ empty$
+        { "need key or journal for " cite$ * " to crossref " * crossref * warning$ }
+        { "journal" bibinfo.check emphasize word.in swap$ * }
+      if$
+    }
+    { word.in swap$ * " " *}
+  if$
+  " \cite{" * crossref * "}" *
+}
+FUNCTION {format.crossref.editor}
+{ editor #1 "{vv~}{ll}" format.name$
+  "editor" bibinfo.check
+  editor num.names$ duplicate$
+  #2 >
+    { pop$
+      "editor" bibinfo.check
+      " " * bbl.etal
+      *
+    }
+    { #2 <
+        'skip$
+        { editor #2 "{ff }{vv }{ll}{ jj}" format.name$ "others" =
+            {
+              "editor" bibinfo.check
+              " " * bbl.etal
+              *
+            }
+            {
+             bbl.and space.word
+              * editor #2 "{vv~}{ll}" format.name$
+              "editor" bibinfo.check
+              *
+            }
+          if$
+        }
+      if$
+    }
+  if$
+}
+FUNCTION {format.book.crossref}
+{ volume duplicate$ empty$
+    { "empty volume in " cite$ * "'s crossref of " * crossref * warning$
+      pop$ word.in
+    }
+    { bbl.volume
+      capitalize
+      swap$ tie.or.space.prefix "volume" bibinfo.check * * bbl.of space.word *
+    }
+  if$
+  editor empty$
+  editor field.or.null author field.or.null =
+  or
+    { key empty$
+        { series empty$
+            { "need editor, key, or series for " cite$ * " to crossref " *
+              crossref * warning$
+              "" *
+            }
+            { series emphasize * }
+          if$
+        }
+        { key * }
+      if$
+    }
+    { format.crossref.editor * }
+  if$
+  " \cite{" * crossref * "}" *
+}
+FUNCTION {format.incoll.inproc.crossref}
+{
+  editor empty$
+  editor field.or.null author field.or.null =
+  or
+    { key empty$
+        { format.booktitle duplicate$ empty$
+            { "need editor, key, or booktitle for " cite$ * " to crossref " *
+              crossref * warning$
+            }
+            { word.in swap$ * }
+          if$
+        }
+        { word.in key * " " *}
+      if$
+    }
+    { word.in format.crossref.editor * " " *}
+  if$
+  " \cite{" * crossref * "}" *
+}
+FUNCTION {format.org.or.pub}
+{ 't :=
+  ""
+  address empty$ t empty$ and
+    'skip$
+    {
+      t empty$
+        { address "address" bibinfo.check *
+        }
+        { t *
+          address empty$
+            'skip$
+            { ", " * address "address" bibinfo.check * }
+          if$
+        }
+      if$
+    }
+  if$
+}
+FUNCTION {format.publisher.address}
+{ publisher "publisher" bibinfo.warn format.org.or.pub
+}
+
+FUNCTION {format.organization.address}
+{ organization "organization" bibinfo.check format.org.or.pub
+}
+
+FUNCTION {article}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.title "title" output.check
+  new.block
+  crossref missing$
+    {
+      journal
+      "journal" bibinfo.check
+      "journal" output.check
+      add.blank
+      format.vol.num.pages output
+      format.date "year" output.check
+    }
+    { format.article.crossref output.nonnull
+      format.pages output
+    }
+  if$
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+FUNCTION {book}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check
+      add.colon
+    }
+    { format.authors output.nonnull
+      add.colon
+      crossref missing$
+        { "author and editor" editor either.or.check }
+        'skip$
+      if$
+    }
+  if$
+  new.block
+  format.btitle "title" output.check
+  crossref missing$
+    { format.bvolume output
+      new.block
+      new.sentence
+      format.number.series output
+      format.publisher.address output
+    }
+    {
+      new.block
+      format.book.crossref output.nonnull
+    }
+  if$
+  format.edition output
+  format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+FUNCTION {booklet}
+{ output.bibitem
+  format.authors output
+  add.colon
+  new.block
+  format.title "title" output.check
+  new.block
+  howpublished "howpublished" bibinfo.check output
+  address "address" bibinfo.check output
+  format.date output
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {inbook}
+{ output.bibitem
+  author empty$
+    { format.editors "author and editor" output.check
+      add.colon
+    }
+    { format.authors output.nonnull
+      add.colon
+      crossref missing$
+        { "author and editor" editor either.or.check }
+        'skip$
+      if$
+    }
+  if$
+  new.block
+  format.btitle "title" output.check
+  crossref missing$
+    {
+      format.bvolume output
+      format.chapter.pages "chapter and pages" output.check
+      new.block
+      new.sentence
+      format.number.series output
+      format.publisher.address output
+    }
+    {
+      format.chapter.pages "chapter and pages" output.check
+      new.block
+      format.book.crossref output.nonnull
+    }
+  if$
+  format.edition output
+  format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {incollection}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.title "title" output.check
+  new.block
+  crossref missing$
+    { format.in.ed.booktitle "booktitle" output.check
+      format.bvolume output
+      format.chapter.pages output
+      new.sentence
+      format.number.series output
+      format.publisher.address output
+      format.edition output
+      format.date "year" output.check
+    }
+    { format.incoll.inproc.crossref output.nonnull
+      format.chapter.pages output
+    }
+  if$
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+FUNCTION {inproceedings}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.title "title" output.check
+  new.block
+  crossref missing$
+    { format.in.ed.booktitle "booktitle" output.check
+      new.sentence % added by titto
+      format.bvolume output
+      format.pages output
+      new.sentence
+      format.number.series output
+      publisher empty$
+        { format.organization.address output }
+        { organization "organization" bibinfo.check output
+          format.publisher.address output
+        }
+      if$
+      format.date "year" output.check
+    }
+    { format.incoll.inproc.crossref output.nonnull
+      format.pages output
+    }
+  if$
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+FUNCTION {conference} { inproceedings }
+FUNCTION {manual}
+{ output.bibitem
+  author empty$
+    { organization "organization" bibinfo.check
+      duplicate$ empty$ 'pop$
+        { output
+          address "address" bibinfo.check output
+        }
+      if$
+    }
+    { format.authors output.nonnull }
+  if$
+  add.colon
+  new.block
+  format.btitle "title" output.check
+  author empty$
+    { organization empty$
+        {
+          address new.block.checka
+          address "address" bibinfo.check output
+        }
+        'skip$
+      if$
+    }
+    {
+      organization address new.block.checkb
+      organization "organization" bibinfo.check output
+      address "address" bibinfo.check output
+    }
+  if$
+  format.edition output
+  format.date output
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.btitle
+  "title" output.check
+  new.block
+  bbl.mthesis format.thesis.type output.nonnull
+  school "school" bibinfo.warn output
+  address "address" bibinfo.check output
+  format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {misc}
+{ output.bibitem
+  format.authors output
+  add.colon
+  title howpublished new.block.checkb
+  format.title output
+  howpublished new.block.checka
+  howpublished "howpublished" bibinfo.check output
+  format.date output
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+  empty.misc.check
+}
+FUNCTION {phdthesis}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.btitle
+  "title" output.check
+  new.block
+  bbl.phdthesis format.thesis.type output.nonnull
+  school "school" bibinfo.warn output
+  address "address" bibinfo.check output
+  format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {proceedings}
+{ output.bibitem
+  editor empty$
+    { organization "organization" bibinfo.check output
+    }
+    { format.editors output.nonnull }
+  if$
+  add.colon
+  new.block
+  format.btitle "title" output.check
+  format.bvolume output
+  editor empty$
+    { publisher empty$
+        {  format.number.series output }
+        {
+          new.sentence
+          format.number.series output
+          format.publisher.address output
+        }
+      if$
+    }
+    { publisher empty$
+        {
+          new.sentence
+          format.number.series output
+          format.organization.address output }
+        {
+          new.sentence
+          format.number.series output
+          organization "organization" bibinfo.check output
+          format.publisher.address output
+        }
+      if$
+     }
+  if$
+      format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {techreport}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.title
+  "title" output.check
+  new.block
+  format.tr.number output.nonnull
+  institution "institution" bibinfo.warn output
+  address "address" bibinfo.check output
+  format.date "year" output.check
+%  new.block
+  format.doi output
+  format.url output
+%  new.block
+  format.note output
+  fin.entry
+}
+
+FUNCTION {unpublished}
+{ output.bibitem
+  format.authors "author" output.check
+  add.colon
+  new.block
+  format.title "title" output.check
+  format.date output
+%  new.block
+  format.url output
+%  new.block
+  format.note "note" output.check
+  fin.entry
+}
+
+FUNCTION {default.type} { misc }
+READ
+FUNCTION {sortify}
+{ purify$
+  "l" change.case$
+}
+INTEGERS { len }
+FUNCTION {chop.word}
+{ 's :=
+  'len :=
+  s #1 len substring$ =
+    { s len #1 + global.max$ substring$ }
+    's
+  if$
+}
+FUNCTION {sort.format.names}
+{ 's :=
+  #1 'nameptr :=
+  ""
+  s num.names$ 'numnames :=
+  numnames 'namesleft :=
+    { namesleft #0 > }
+    { s nameptr
+      "{ll{ }}{  ff{ }}{  jj{ }}"
+      format.name$ 't :=
+      nameptr #1 >
+        {
+          "   "  *
+          namesleft #1 = t "others" = and
+            { "zzzzz" * }
+            { t sortify * }
+          if$
+        }
+        { t sortify * }
+      if$
+      nameptr #1 + 'nameptr :=
+      namesleft #1 - 'namesleft :=
+    }
+  while$
+}
+
+FUNCTION {sort.format.title}
+{ 't :=
+  "A " #2
+    "An " #3
+      "The " #4 t chop.word
+    chop.word
+  chop.word
+  sortify
+  #1 global.max$ substring$
+}
+FUNCTION {author.sort}
+{ author empty$
+    { key empty$
+        { "to sort, need author or key in " cite$ * warning$
+          ""
+        }
+        { key sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+FUNCTION {author.editor.sort}
+{ author empty$
+    { editor empty$
+        { key empty$
+            { "to sort, need author, editor, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { editor sort.format.names }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+FUNCTION {author.organization.sort}
+{ author empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need author, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { author sort.format.names }
+  if$
+}
+FUNCTION {editor.organization.sort}
+{ editor empty$
+    { organization empty$
+        { key empty$
+            { "to sort, need editor, organization, or key in " cite$ * warning$
+              ""
+            }
+            { key sortify }
+          if$
+        }
+        { "The " #4 organization chop.word sortify }
+      if$
+    }
+    { editor sort.format.names }
+  if$
+}
+FUNCTION {presort}
+{ type$ "book" =
+  type$ "inbook" =
+  or
+    'author.editor.sort
+    { type$ "proceedings" =
+        'editor.organization.sort
+        { type$ "manual" =
+            'author.organization.sort
+            'author.sort
+          if$
+        }
+      if$
+    }
+  if$
+  "    "
+  *
+  year field.or.null sortify
+  *
+  "    "
+  *
+  title field.or.null
+  sort.format.title
+  *
+  #1 entry.max$ substring$
+  'sort.key$ :=
+}
+ITERATE {presort}
+SORT
+STRINGS { longest.label }
+INTEGERS { number.label longest.label.width }
+FUNCTION {initialize.longest.label}
+{ "" 'longest.label :=
+  #1 'number.label :=
+  #0 'longest.label.width :=
+}
+FUNCTION {longest.label.pass}
+{ number.label int.to.str$ 'label :=
+  number.label #1 + 'number.label :=
+  label width$ longest.label.width >
+    { label 'longest.label :=
+      label width$ 'longest.label.width :=
+    }
+    'skip$
+  if$
+}
+EXECUTE {initialize.longest.label}
+ITERATE {longest.label.pass}
+FUNCTION {begin.bib}
+{ preamble$ empty$
+    'skip$
+    { preamble$ write$ newline$ }
+  if$
+  "\begin{thebibliography}{"  longest.label  * "}" *
+  write$ newline$
+  "\providecommand{\url}[1]{\texttt{#1}}"
+  write$ newline$
+  "\providecommand{\urlprefix}{URL }"
+  write$ newline$
+  "\providecommand{\doi}[1]{https://doi.org/#1}"
+  write$ newline$
+}
+EXECUTE {begin.bib}
+EXECUTE {init.state.consts}
+ITERATE {call.type$}
+FUNCTION {end.bib}
+{ newline$
+  "\end{thebibliography}" write$ newline$
+}
+EXECUTE {end.bib}
+%% End of customized bst file
+%%
+%% End of file `titto.bst'.