diff --git a/src/main/java/ru/ulstu/activity/api/ActivityRepository.java b/src/main/java/ru/ulstu/activity/api/ActivityRepository.java
index 7353958..a4d6eca 100644
--- a/src/main/java/ru/ulstu/activity/api/ActivityRepository.java
+++ b/src/main/java/ru/ulstu/activity/api/ActivityRepository.java
@@ -2,6 +2,8 @@ package ru.ulstu.activity.api;
 
 import org.springframework.data.repository.query.Param;
 
-public interface ActivityRepository {
+public interface ActivityRepository<T> {
     String findByNameAndNotId(@Param("name") String name, @Param("id") Integer id);
+
+    T save(T t);
 }
diff --git a/src/main/java/ru/ulstu/activity/common/service/AbstractActivityService.java b/src/main/java/ru/ulstu/activity/common/service/AbstractActivityService.java
deleted file mode 100644
index d964822..0000000
--- a/src/main/java/ru/ulstu/activity/common/service/AbstractActivityService.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package ru.ulstu.activity.common.service;
-
-import ru.ulstu.activity.api.ActivityRepository;
-import ru.ulstu.activity.api.model.ActivityDto;
-import ru.ulstu.activity.api.model.ActivityListDto;
-import ru.ulstu.activity.common.model.AbstractActivity;
-import ru.ulstu.core.model.response.PageableItems;
-
-import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
-
-public abstract class AbstractActivityService<L extends ActivityListDto, T extends AbstractActivity, D extends ActivityDto> {
-
-    protected ActivityRepository activityRepository;
-
-    public abstract T create(T entity);
-
-    public abstract D create(D entity);
-
-    public abstract T update(T entity);
-
-    public abstract D update(D entity);
-
-    public abstract boolean delete(Integer id);
-
-    public abstract PageableItems<T> findAll(int offset, int count);
-
-    public PageableItems<L> findAllDto(int offset, int count) {
-        return convertPageable(findAll(offset, count), entity -> getActivityListDto(entity));
-    }
-
-    protected abstract L getActivityListDto(T entity);
-
-    protected boolean checkUniqueName(String title, Integer id) {
-        return title.equals(activityRepository.findByNameAndNotId(title, id));
-    }
-}
diff --git a/src/main/java/ru/ulstu/activity/common/service/ActivityNotificationService.java b/src/main/java/ru/ulstu/activity/common/service/ActivityNotificationService.java
new file mode 100644
index 0000000..745ccaf
--- /dev/null
+++ b/src/main/java/ru/ulstu/activity/common/service/ActivityNotificationService.java
@@ -0,0 +1,8 @@
+package ru.ulstu.activity.common.service;
+
+import ru.ulstu.activity.common.model.AbstractActivity;
+
+public abstract class ActivityNotificationService<T extends AbstractActivity> {
+
+    public abstract void sendCreateNotification(T entity);
+}
diff --git a/src/main/java/ru/ulstu/activity/common/service/ActivityService.java b/src/main/java/ru/ulstu/activity/common/service/ActivityService.java
new file mode 100644
index 0000000..0ff7844
--- /dev/null
+++ b/src/main/java/ru/ulstu/activity/common/service/ActivityService.java
@@ -0,0 +1,77 @@
+package ru.ulstu.activity.common.service;
+
+import org.springframework.transaction.annotation.Transactional;
+import ru.ulstu.activity.api.ActivityRepository;
+import ru.ulstu.activity.api.model.ActivityDto;
+import ru.ulstu.activity.api.model.ActivityListDto;
+import ru.ulstu.activity.common.model.AbstractActivity;
+import ru.ulstu.activity.ping.service.PingService;
+import ru.ulstu.core.model.response.PageableItems;
+
+import java.io.IOException;
+
+import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
+
+public abstract class ActivityService<L extends ActivityListDto, T extends AbstractActivity, D extends ActivityDto> {
+
+    protected final ActivityRepository<T> activityRepository;
+    protected final ActivityNotificationService<T> activityNotificationService;
+    protected final PingService pingService;
+
+    protected ActivityService(ActivityRepository activityRepository,
+                              ActivityNotificationService<T> activityNotificationService,
+                              PingService pingService) {
+        this.activityRepository = activityRepository;
+        this.activityNotificationService = activityNotificationService;
+        this.pingService = pingService;
+    }
+
+    @Transactional
+    public D create(D entityDto) {
+        T newEntity;
+        try {
+            newEntity = copyFromDto(getNewActivity(), entityDto);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return getNewActivityDto(create(newEntity));
+    }
+
+    @Transactional
+    public T create(T entity) {
+        T newEntity = activityRepository.save(entity);
+        activityNotificationService.sendCreateNotification(newEntity);
+        return newEntity;
+    }
+
+    public abstract T update(T entity);
+
+    public abstract D update(D entity);
+
+    public abstract boolean delete(Integer id);
+
+    public abstract T findById(Integer id);
+
+    public abstract PageableItems<T> findAll(int offset, int count);
+
+    public PageableItems<L> findAllDto(int offset, int count) {
+        return convertPageable(findAll(offset, count), entity -> getActivityListDto(entity));
+    }
+
+    protected abstract T copyFromDto(T t, D d) throws IOException;
+
+    protected abstract L getActivityListDto(T entity);
+
+    protected abstract T getNewActivity();
+
+    protected abstract D getNewActivityDto(T entity);
+
+    protected boolean checkUniqueName(String title, Integer id) {
+        return title.equals(activityRepository.findByNameAndNotId(title, id));
+    }
+
+    @Transactional
+    public void ping(int entityId) {
+        pingService.addPing(findById(entityId));
+    }
+}
diff --git a/src/main/java/ru/ulstu/activity/conference/ConferenceController.java b/src/main/java/ru/ulstu/activity/conference/controller/ConferenceController.java
similarity index 55%
rename from src/main/java/ru/ulstu/activity/conference/ConferenceController.java
rename to src/main/java/ru/ulstu/activity/conference/controller/ConferenceController.java
index cfa9ed6..63af6c6 100644
--- a/src/main/java/ru/ulstu/activity/conference/ConferenceController.java
+++ b/src/main/java/ru/ulstu/activity/conference/controller/ConferenceController.java
@@ -1,7 +1,11 @@
-package ru.ulstu.activity.conference;
+package ru.ulstu.activity.conference.controller;
 
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestParam;
 import ru.ulstu.activity.api.ActivityController;
 import ru.ulstu.activity.conference.model.ConferenceDashboardDto;
@@ -11,7 +15,9 @@ import ru.ulstu.activity.conference.service.ConferenceService;
 import ru.ulstu.core.model.response.PageableItems;
 import ru.ulstu.core.model.response.Response;
 
-public class ConferenceController extends ActivityController<ConferenceListDto, ConferenceDashboardDto, ConferenceDto> {
+import javax.validation.Valid;
+
+public class ConferenceController implements ActivityController<ConferenceListDto, ConferenceDashboardDto, ConferenceDto> {
 
     private final ConferenceService conferenceService;
 
@@ -34,27 +40,31 @@ public class ConferenceController extends ActivityController<ConferenceListDto,
     }
 
     @Override
-    public Response<ConferenceDto> get(@PathVariable("grant-id") Integer entityId) {
-        return new Response<>(conferenceService.findById(entityId));
+    @GetMapping("{conference-id}")
+    public Response<ConferenceDto> get(@PathVariable("conference-id") Integer entityId) {
+        return new Response<>(conferenceService.findConferenceById(entityId));
     }
 
     @Override
-    public Response<ConferenceDto> create(ConferenceDto entity) {
-        return null;
+    @PostMapping
+    public Response<ConferenceDto> create(@RequestBody @Valid ConferenceDto entity) {
+        return new Response<>(conferenceService.create(entity));
     }
 
     @Override
-    public Response<ConferenceDto> update(ConferenceDto entity) {
-        return null;
+    @PutMapping
+    public Response<ConferenceDto> update(@RequestBody @Valid ConferenceDto entity) {
+        return new Response<>(conferenceService.update(entity));
     }
 
     @Override
-    public Response<Boolean> delete(Integer entityId) {
-        return null;
+    @DeleteMapping("{conference-id}")
+    public Response<Boolean> delete(@PathVariable("conference-id") Integer entityId) {
+        return new Response<>(conferenceService.delete(entityId));
     }
 
-    @Override
-    public void ping(int entityId) {
-
+    @PostMapping("ping/{conference-id}")
+    public void ping(@PathVariable("conference-id") int conferenceId) {
+        conferenceService.ping(conferenceId);
     }
 }
diff --git a/src/main/java/ru/ulstu/activity/conference/repository/ConferenceRepository.java b/src/main/java/ru/ulstu/activity/conference/repository/ConferenceRepository.java
index 4efe9bc..488240d 100644
--- a/src/main/java/ru/ulstu/activity/conference/repository/ConferenceRepository.java
+++ b/src/main/java/ru/ulstu/activity/conference/repository/ConferenceRepository.java
@@ -13,7 +13,7 @@ import ru.ulstu.user.model.User;
 import java.util.Date;
 import java.util.List;
 
-public interface ConferenceRepository extends JpaRepository<Conference, Integer>, ActivityRepository {
+public interface ConferenceRepository extends JpaRepository<Conference, Integer>, ActivityRepository<Conference> {
     @Query("SELECT c FROM Conference c LEFT JOIN c.users u WHERE (:user IS NULL OR u.user = :user) " +
             "AND (YEAR(c.beginDate) = :year OR :year IS NULL) ORDER BY begin_date DESC")
     List<Conference> findByUserAndYear(@Param("user") User user, @Param("year") Integer year);
diff --git a/src/main/java/ru/ulstu/activity/conference/service/ConferenceNotificationService.java b/src/main/java/ru/ulstu/activity/conference/service/ConferenceNotificationService.java
index db3a056..7d94694 100644
--- a/src/main/java/ru/ulstu/activity/conference/service/ConferenceNotificationService.java
+++ b/src/main/java/ru/ulstu/activity/conference/service/ConferenceNotificationService.java
@@ -2,6 +2,7 @@ package ru.ulstu.activity.conference.service;
 
 import com.google.common.collect.ImmutableMap;
 import org.springframework.stereotype.Service;
+import ru.ulstu.activity.common.service.ActivityNotificationService;
 import ru.ulstu.activity.conference.model.Conference;
 import ru.ulstu.activity.ping.service.PingService;
 import ru.ulstu.core.util.DateUtils;
@@ -14,7 +15,7 @@ import java.util.List;
 import java.util.Map;
 
 @Service
-public class ConferenceNotificationService {
+public class ConferenceNotificationService extends ActivityNotificationService<Conference> {
 
     private final static int YESTERDAY = -1;
     private final static int DAYS_TO_DEADLINE_NOTIFICATION = 7;
diff --git a/src/main/java/ru/ulstu/activity/conference/service/ConferenceService.java b/src/main/java/ru/ulstu/activity/conference/service/ConferenceService.java
index 6db366f..e596d88 100644
--- a/src/main/java/ru/ulstu/activity/conference/service/ConferenceService.java
+++ b/src/main/java/ru/ulstu/activity/conference/service/ConferenceService.java
@@ -4,8 +4,13 @@ import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.validation.Errors;
-import ru.ulstu.activity.common.service.AbstractActivityService;
-import ru.ulstu.activity.conference.model.*;
+import ru.ulstu.activity.common.service.ActivityService;
+import ru.ulstu.activity.conference.model.Conference;
+import ru.ulstu.activity.conference.model.ConferenceDashboardDto;
+import ru.ulstu.activity.conference.model.ConferenceDto;
+import ru.ulstu.activity.conference.model.ConferenceFilterDto;
+import ru.ulstu.activity.conference.model.ConferenceListDto;
+import ru.ulstu.activity.conference.model.ConferenceUser;
 import ru.ulstu.activity.conference.repository.ConferenceRepository;
 import ru.ulstu.activity.deadline.model.Deadline;
 import ru.ulstu.activity.deadline.service.DeadlineService;
@@ -20,7 +25,6 @@ import ru.ulstu.user.service.UserService;
 
 import java.io.IOException;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -30,7 +34,7 @@ import static ru.ulstu.core.util.StreamApiUtils.convert;
 import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
 
 @Service
-public class ConferenceService extends AbstractActivityService<ConferenceListDto, Conference, ConferenceDto> {
+public class ConferenceService extends ActivityService<ConferenceListDto, Conference, ConferenceDto> {
 
     private final ConferenceRepository conferenceRepository;
     private final ConferenceUserService conferenceUserService;
@@ -49,7 +53,7 @@ public class ConferenceService extends AbstractActivityService<ConferenceListDto
                              PingService pingService,
                              ConferenceNotificationService conferenceNotificationService,
                              EventService eventService) {
-        this.activityRepository = conferenceRepository;
+        super(conferenceRepository, conferenceNotificationService, pingService);
         this.conferenceRepository = conferenceRepository;
         this.conferenceUserService = conferenceUserService;
         this.deadlineService = deadlineService;
@@ -90,27 +94,6 @@ public class ConferenceService extends AbstractActivityService<ConferenceListDto
         return true;
     }
 
-    @Transactional
-    @Override
-    public ConferenceDto create(ConferenceDto conferenceDto) {
-        Conference newConference;
-        try {
-            newConference = copyFromDto(new Conference(), conferenceDto);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-        return new ConferenceDto(create(newConference));
-    }
-
-    @Transactional
-    @Override
-    public Conference create(Conference conference) {
-        conference = conferenceRepository.save(conference);
-        conferenceNotificationService.sendCreateNotification(conference);
-        eventService.createFromObject(conference, Collections.emptyList(), false, "конференции");
-        return conference;
-    }
-
     @Transactional
     @Override
     public ConferenceDto update(ConferenceDto conferenceDto) {
@@ -154,6 +137,16 @@ public class ConferenceService extends AbstractActivityService<ConferenceListDto
         return new ConferenceListDto(entity);
     }
 
+    @Override
+    protected Conference getNewActivity() {
+        return new Conference();
+    }
+
+    @Override
+    protected ConferenceDto getNewActivityDto(Conference entity) {
+        return new ConferenceDto(entity);
+    }
+
     public ConferenceDto addDeadline(ConferenceDto conferenceDto) {
         conferenceDto.getDeadlines().add(new Deadline());
         return conferenceDto;
@@ -206,19 +199,19 @@ public class ConferenceService extends AbstractActivityService<ConferenceListDto
         return Arrays.asList(ConferenceUser.Deposit.values());
     }
 
-    private Conference copyFromDto(Conference conference, ConferenceDto conferenceDto) throws IOException {
+    protected Conference copyFromDto(Conference conference, ConferenceDto conferenceDto) throws IOException {
         conference.setTitle(conferenceDto.getTitle());
         conference.setDescription(conferenceDto.getDescription());
         conference.setUrl(conferenceDto.getUrl());
         conference.setBeginDate(conferenceDto.getBeginDate());
         conference.setEndDate(conferenceDto.getEndDate());
         conference.getPapers().clear();
-        conferenceDto.getPapers().forEach(paper -> conference.getPapers().add(paper.getId() != null ? paperService.findPaperById(paper.getId()) : paperService.create(paper)));
+        conferenceDto.getPapers().forEach(paper -> conference.getPapers().add(paper.getId() != null ? paperService.findById(paper.getId()) : paperService.create(paper)));
         conference.setDeadlines(deadlineService.saveOrCreate(conferenceDto.getDeadlines()));
         conference.setUsers(conferenceUserService.saveOrCreate(conferenceDto.getUsers()));
         if (conferenceDto.getPaperIds() != null && !conferenceDto.getPaperIds().isEmpty()) {
             conferenceDto.getPaperIds().forEach(paperId ->
-                    conference.getPapers().add(paperService.findPaperById(paperId)));
+                    conference.getPapers().add(paperService.findById(paperId)));
         }
         return conference;
     }
@@ -249,17 +242,11 @@ public class ConferenceService extends AbstractActivityService<ConferenceListDto
         return conferenceRepository.isPaperAttached(paperId);
     }
 
-    @Transactional
-    public void ping(ConferenceDto conferenceDto) throws IOException {
-        pingService.addPing(findConferenceById(conferenceDto.getId()));
-        conferenceRepository.updatePingConference(conferenceDto.getId());
-    }
-
-    public ConferenceDto findById(Integer id) {
-        return new ConferenceDto(findConferenceById(id));
+    public ConferenceDto findConferenceById(Integer id) {
+        return new ConferenceDto(findById(id));
     }
 
-    public Conference findConferenceById(Integer id) {
+    public Conference findById(Integer id) {
         return conferenceRepository.getOne(id);
     }
 
diff --git a/src/main/java/ru/ulstu/activity/grant/controller/GrantController.java b/src/main/java/ru/ulstu/activity/grant/controller/GrantController.java
index a2181f2..a5563ff 100644
--- a/src/main/java/ru/ulstu/activity/grant/controller/GrantController.java
+++ b/src/main/java/ru/ulstu/activity/grant/controller/GrantController.java
@@ -51,9 +51,9 @@ public class GrantController implements ActivityController<GrantListDto, GrantDa
     }
 
     @Override
-    @GetMapping
+    @GetMapping("{grant-id}")
     public Response<GrantDto> get(@PathVariable("grant-id") Integer entityId) {
-        return new Response<>(grantService.findById(entityId));
+        return new Response<>(grantService.findGrantById(entityId));
     }
 
     @Override
@@ -69,14 +69,14 @@ public class GrantController implements ActivityController<GrantListDto, GrantDa
     }
 
     @Override
-    @DeleteMapping
+    @DeleteMapping("{grant-id}")
     public Response<Boolean> delete(@PathVariable("grant-id") Integer entityId) {
         return new Response<>(grantService.delete(entityId));
     }
 
     @Override
-    @PostMapping("ping/{paper-id}")
-    public void ping(@PathVariable("paper-id") int entityId) {
+    @PostMapping("ping/{grant-id}")
+    public void ping(@PathVariable("grant-id") int entityId) {
         grantService.ping(entityId);
     }
 }
diff --git a/src/main/java/ru/ulstu/activity/grant/repository/GrantRepository.java b/src/main/java/ru/ulstu/activity/grant/repository/GrantRepository.java
index a9d71f4..3b7edfe 100644
--- a/src/main/java/ru/ulstu/activity/grant/repository/GrantRepository.java
+++ b/src/main/java/ru/ulstu/activity/grant/repository/GrantRepository.java
@@ -10,7 +10,7 @@ import ru.ulstu.activity.grant.model.Grant;
 
 import java.util.List;
 
-public interface GrantRepository extends JpaRepository<Grant, Integer>, ActivityRepository {
+public interface GrantRepository extends JpaRepository<Grant, Integer>, ActivityRepository<Grant> {
 
     List<Grant> findByStatus(Grant.GrantStatus status);
 
diff --git a/src/main/java/ru/ulstu/activity/grant/service/GrantNotificationService.java b/src/main/java/ru/ulstu/activity/grant/service/GrantNotificationService.java
index affe2a7..2ffed77 100644
--- a/src/main/java/ru/ulstu/activity/grant/service/GrantNotificationService.java
+++ b/src/main/java/ru/ulstu/activity/grant/service/GrantNotificationService.java
@@ -2,6 +2,7 @@ package ru.ulstu.activity.grant.service;
 
 import com.google.common.collect.ImmutableMap;
 import org.springframework.stereotype.Service;
+import ru.ulstu.activity.common.service.ActivityNotificationService;
 import ru.ulstu.activity.grant.model.Grant;
 import ru.ulstu.core.util.DateUtils;
 import ru.ulstu.user.model.User;
@@ -13,7 +14,7 @@ import java.util.Map;
 import java.util.Set;
 
 @Service
-public class GrantNotificationService {
+public class GrantNotificationService extends ActivityNotificationService<Grant> {
     private final static int DAYS_TO_DEADLINE_NOTIFICATION = 7;
     private final static String TEMPLATE_DEADLINE = "grantDeadlineNotification";
     private final static String TEMPLATE_CREATE = "grantCreateNotification";
diff --git a/src/main/java/ru/ulstu/activity/grant/service/GrantService.java b/src/main/java/ru/ulstu/activity/grant/service/GrantService.java
index 45891f1..4318a3f 100644
--- a/src/main/java/ru/ulstu/activity/grant/service/GrantService.java
+++ b/src/main/java/ru/ulstu/activity/grant/service/GrantService.java
@@ -7,7 +7,7 @@ import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.validation.Errors;
-import ru.ulstu.activity.common.service.AbstractActivityService;
+import ru.ulstu.activity.common.service.ActivityService;
 import ru.ulstu.activity.deadline.model.Deadline;
 import ru.ulstu.activity.deadline.service.DeadlineService;
 import ru.ulstu.activity.file.service.FileService;
@@ -45,7 +45,7 @@ import static ru.ulstu.activity.grant.model.Grant.GrantStatus.APPLICATION;
 import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
 
 @Service
-public class GrantService extends AbstractActivityService<GrantListDto, Grant, GrantDto> {
+public class GrantService extends ActivityService<GrantListDto, Grant, GrantDto> {
     private final Logger log = LoggerFactory.getLogger(GrantService.class);
 
     private final GrantRepository grantRepository;
@@ -69,9 +69,9 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
                         GrantNotificationService grantNotificationService,
                         KiasService kiasService,
                         PingService pingService) {
+        super(grantRepository, grantNotificationService, pingService);
         this.grantRepository = grantRepository;
         this.kiasService = kiasService;
-        this.activityRepository = grantRepository;
         this.fileService = fileService;
         this.deadlineService = deadlineService;
         this.projectService = projectService;
@@ -83,7 +83,7 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
     }
 
     public GrantDto getExistGrantById(Integer id) {
-        return new GrantDto(findGrantById(id));
+        return new GrantDto(findById(id));
     }
 
     @Override
@@ -97,16 +97,14 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
         return new GrantListDto(entity);
     }
 
-    @Transactional
     @Override
-    public GrantDto create(GrantDto grantDto) {
-        Grant newGrant;
-        try {
-            newGrant = copyFromDto(new Grant(), grantDto);
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-        return new GrantDto(create(newGrant));
+    protected Grant getNewActivity() {
+        return new Grant();
+    }
+
+    @Override
+    protected GrantDto getNewActivityDto(Grant entity) {
+        return new GrantDto(entity);
     }
 
     @Transactional
@@ -121,7 +119,7 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
     @Transactional
     @Override
     public GrantDto update(GrantDto grantDto) {
-        Grant grant = findGrantById(grantDto.getId());
+        Grant grant = findById(grantDto.getId());
         return new GrantDto(update(grant));
     }
 
@@ -147,7 +145,7 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
         return grant;
     }
 
-    private Grant copyFromDto(Grant grant, GrantDto grantDto) throws IOException {
+    protected Grant copyFromDto(Grant grant, GrantDto grantDto) throws IOException {
         grant.setComment(grantDto.getComment());
         grant.setStatus(grantDto.getStatus() == null ? APPLICATION : grantDto.getStatus());
         grant.setTitle(grantDto.getTitle());
@@ -169,7 +167,7 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
         }
         grant.getPapers().clear();
         if (grantDto.getPaperIds() != null && !grantDto.getPaperIds().isEmpty()) {
-            grantDto.getPaperIds().forEach(paperIds -> grant.getPapers().add(paperService.findPaperById(paperIds)));
+            grantDto.getPaperIds().forEach(paperIds -> grant.getPapers().add(paperService.findById(paperIds)));
         }
         return grant;
     }
@@ -182,7 +180,7 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
 
     @Transactional
     public boolean delete(Integer grantId) {
-        Grant grant = findGrantById(grantId);
+        Grant grant = findById(grantId);
         if (grant != null) {
             grantRepository.delete(grant);
             return true;
@@ -349,16 +347,16 @@ public class GrantService extends AbstractActivityService<GrantListDto, Grant, G
 
     }
 
-    public GrantDto findById(Integer id) {
-        return new GrantDto(grantRepository.getOne(id));
+    public GrantDto findGrantById(Integer id) {
+        return new GrantDto(findById(id));
     }
 
-    public Grant findGrantById(Integer id) {
+    public Grant findById(Integer id) {
         return grantRepository.getOne(id);
     }
 
     @Transactional
     public void ping(int grantId) {
-        pingService.addPing(findGrantById(grantId));
+        pingService.addPing(findById(grantId));
     }
 }
diff --git a/src/main/java/ru/ulstu/activity/paper/controller/PaperController.java b/src/main/java/ru/ulstu/activity/paper/controller/PaperController.java
index 0c1816c..8a3a71f 100644
--- a/src/main/java/ru/ulstu/activity/paper/controller/PaperController.java
+++ b/src/main/java/ru/ulstu/activity/paper/controller/PaperController.java
@@ -47,7 +47,7 @@ public class PaperController implements ActivityController<PaperListDto, PaperDa
 
     @GetMapping("{paper-id}")
     public Response<PaperDto> get(@PathVariable("paper-id") Integer paperId) {
-        return new Response<>(paperService.findById(paperId));
+        return new Response<>(paperService.findPaperById(paperId));
     }
 
     @PostMapping
diff --git a/src/main/java/ru/ulstu/activity/paper/repository/PaperRepository.java b/src/main/java/ru/ulstu/activity/paper/repository/PaperRepository.java
index bd75a12..fee202a 100644
--- a/src/main/java/ru/ulstu/activity/paper/repository/PaperRepository.java
+++ b/src/main/java/ru/ulstu/activity/paper/repository/PaperRepository.java
@@ -4,13 +4,14 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
+import ru.ulstu.activity.api.ActivityRepository;
 import ru.ulstu.activity.paper.model.Paper;
 import ru.ulstu.core.repository.JpaDetachableRepository;
 import ru.ulstu.user.model.User;
 
 import java.util.List;
 
-public interface PaperRepository extends JpaDetachableRepository<Paper, Integer> {
+public interface PaperRepository extends JpaDetachableRepository<Paper, Integer>, ActivityRepository<Paper> {
 
     @Query("SELECT p FROM Paper p WHERE (:author IS NULL OR :author MEMBER OF p.authors) AND (YEAR(p.createDate) = :year OR :year IS NULL)")
     List<Paper> filter(@Param("author") User author, @Param("year") Integer year);
@@ -32,4 +33,7 @@ public interface PaperRepository extends JpaDetachableRepository<Paper, Integer>
 
     @Query("SELECT p FROM Paper p ")
     Page<Paper> findAll(Pageable pageable);
+
+    @Query("SELECT title FROM Paper p WHERE (p.title = :name) AND (:id IS NULL OR p.id != :id) ")
+    String findByNameAndNotId(@Param("name") String name, @Param("id") Integer id);
 }
diff --git a/src/main/java/ru/ulstu/activity/paper/service/PaperNotificationService.java b/src/main/java/ru/ulstu/activity/paper/service/PaperNotificationService.java
index 1e529ac..5da1937 100644
--- a/src/main/java/ru/ulstu/activity/paper/service/PaperNotificationService.java
+++ b/src/main/java/ru/ulstu/activity/paper/service/PaperNotificationService.java
@@ -2,6 +2,7 @@ package ru.ulstu.activity.paper.service;
 
 import com.google.common.collect.ImmutableMap;
 import org.springframework.stereotype.Service;
+import ru.ulstu.activity.common.service.ActivityNotificationService;
 import ru.ulstu.activity.paper.model.Paper;
 import ru.ulstu.core.model.response.PageableItems;
 import ru.ulstu.core.util.DateUtils;
@@ -13,7 +14,7 @@ import java.util.Map;
 import java.util.Set;
 
 @Service
-public class PaperNotificationService {
+public class PaperNotificationService extends ActivityNotificationService<Paper> {
     private final static int DAYS_TO_DEADLINE_NOTIFICATION = 7;
     private final static String TEMPLATE_DEADLINE = "paperDeadlineNotification";
     private final static String TEMPLATE_CREATE = "paperCreateNotification";
diff --git a/src/main/java/ru/ulstu/activity/paper/service/PaperService.java b/src/main/java/ru/ulstu/activity/paper/service/PaperService.java
index f2c095f..fb41587 100644
--- a/src/main/java/ru/ulstu/activity/paper/service/PaperService.java
+++ b/src/main/java/ru/ulstu/activity/paper/service/PaperService.java
@@ -3,7 +3,7 @@ package ru.ulstu.activity.paper.service;
 import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import ru.ulstu.activity.common.service.AbstractActivityService;
+import ru.ulstu.activity.common.service.ActivityService;
 import ru.ulstu.activity.deadline.model.Deadline;
 import ru.ulstu.activity.deadline.service.DeadlineService;
 import ru.ulstu.activity.file.model.FileDataDto;
@@ -44,7 +44,7 @@ import static ru.ulstu.core.util.StreamApiUtils.convert;
 import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
 
 @Service
-public class PaperService extends AbstractActivityService<PaperListDto, Paper, PaperDto> {
+public class PaperService extends ActivityService<PaperListDto, Paper, PaperDto> {
     private final PaperNotificationService paperNotificationService;
     private final PaperRepository paperRepository;
     private final UserService userService;
@@ -63,6 +63,7 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
                         DeadlineService deadlineService,
                         EventService eventService,
                         PingService pingService) {
+        super(paperRepository, paperNotificationService, pingService);
         this.paperRepository = paperRepository;
         this.fileService = fileService;
         this.paperNotificationService = paperNotificationService;
@@ -86,19 +87,21 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
         return new PaperListDto(entity);
     }
 
+    @Override
+    protected Paper getNewActivity() {
+        return new Paper();
+    }
+
+    @Override
+    protected PaperDto getNewActivityDto(Paper entity) {
+        return new PaperDto(entity);
+    }
+
     private PageableItems<Paper> findAllActive(int offset, int count) {
         Page<Paper> activePapersPage = paperRepository.findAllWithoutStatuses(new OffsetablePageRequest(offset, count), COMPLETED, FAILED);
         return new PageableItems<>(activePapersPage.getTotalElements(), sortPapers(activePapersPage.getContent()));
     }
 
-    @Transactional
-    public Paper create(Paper paper) {
-        Paper newPaper = paperRepository.save(paper);
-        paperNotificationService.sendCreateNotification(newPaper);
-        eventService.createFromPaper(newPaper);
-        return newPaper;
-    }
-
     public Paper update(Paper paper) {
         paperRepository.save(paper);
         paperNotificationService.sendCreateNotification(paper, oldAuthors);
@@ -106,14 +109,9 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
         return paper;
     }
 
-    @Transactional
-    public PaperDto create(PaperDto paperDto) {
-        return new PaperDto(create(copyFromDto(new Paper(), paperDto)));
-    }
-
     @Transactional
     public PaperDto update(PaperDto paperDto) {
-        Paper paper = findPaperById(paperDto.getId());
+        Paper paper = findById(paperDto.getId());
         oldStatus = paper.getStatus();
         oldAuthors = new HashSet<>(paper.getAuthors());
 
@@ -128,7 +126,7 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
         return new PaperDto(update(copyFromDto(paper, paperDto)));
     }
 
-    private Paper copyFromDto(Paper paper, PaperDto paperDto) {
+    protected Paper copyFromDto(Paper paper, PaperDto paperDto) {
         paper.setComment(paperDto.getComment());
         paper.setUrl(paperDto.getUrl());
         paper.setCreateDate(paper.getCreateDate() == null ? new Date() : paper.getCreateDate());
@@ -230,11 +228,11 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
         }
     }
 
-    public PaperDto findById(Integer paperId) {
-        return new PaperDto(findPaperById(paperId));
+    public PaperDto findPaperById(Integer paperId) {
+        return new PaperDto(findById(paperId));
     }
 
-    public Paper findPaperById(Integer paperId) {
+    public Paper findById(Integer paperId) {
         return paperRepository.findById(paperId)
                 .orElseThrow(() -> new EntityNotFoundException("Paper with id=" + paperId + " not found"));
     }
@@ -262,9 +260,4 @@ public class PaperService extends AbstractActivityService<PaperListDto, Paper, P
     public List<Paper> findAllCompletedByType(Paper.PaperType type) {
         return paperRepository.findByTypeAndStatus(type, Paper.PaperStatus.COMPLETED);
     }
-
-    @Transactional
-    public void ping(int paperId) {
-        pingService.addPing(findPaperById(paperId));
-    }
 }
diff --git a/src/main/java/ru/ulstu/activity/ping/service/PingService.java b/src/main/java/ru/ulstu/activity/ping/service/PingService.java
index 343fc80..8a52afa 100644
--- a/src/main/java/ru/ulstu/activity/ping/service/PingService.java
+++ b/src/main/java/ru/ulstu/activity/ping/service/PingService.java
@@ -18,8 +18,7 @@ public class PingService {
     private final UserService userService;
 
     public PingService(PingRepository pingRepository,
-                       UserService userService,
-                       PingScheduler pingScheduler) {
+                       UserService userService) {
         this.pingRepository = pingRepository;
         this.userService = userService;
     }
diff --git a/src/main/java/ru/ulstu/activity/students/controller/TaskController.java b/src/main/java/ru/ulstu/activity/students/controller/TaskController.java
index 1e3041b..8be575f 100644
--- a/src/main/java/ru/ulstu/activity/students/controller/TaskController.java
+++ b/src/main/java/ru/ulstu/activity/students/controller/TaskController.java
@@ -44,7 +44,7 @@ public class TaskController implements ActivityController<TaskListDto, TaskDashb
 
     @GetMapping("{task-id}")
     public Response<TaskDto> get(@PathVariable("task-id") Integer taskId) {
-        return new Response<>(taskService.findById(taskId));
+        return new Response<>(taskService.findTaskById(taskId));
     }
 
     @PostMapping
@@ -57,7 +57,7 @@ public class TaskController implements ActivityController<TaskListDto, TaskDashb
         return new Response<>(taskService.update(paperDto));
     }
 
-    @DeleteMapping("/{task-id}")
+    @DeleteMapping("{task-id}")
     public Response<Boolean> delete(@PathVariable("task-id") Integer taskId) {
         return new Response<>(taskService.delete(taskId));
     }
diff --git a/src/main/java/ru/ulstu/activity/students/repository/TaskRepository.java b/src/main/java/ru/ulstu/activity/students/repository/TaskRepository.java
index 9e8d30d..1439385 100644
--- a/src/main/java/ru/ulstu/activity/students/repository/TaskRepository.java
+++ b/src/main/java/ru/ulstu/activity/students/repository/TaskRepository.java
@@ -3,13 +3,14 @@ package ru.ulstu.activity.students.repository;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
+import ru.ulstu.activity.api.ActivityRepository;
 import ru.ulstu.activity.students.model.Task;
 import ru.ulstu.activity.tags.model.Tag;
 
 import java.util.Date;
 import java.util.List;
 
-public interface TaskRepository extends JpaRepository<Task, Integer> {
+public interface TaskRepository extends JpaRepository<Task, Integer>, ActivityRepository<Task> {
 
     @Query("SELECT t FROM Task t WHERE (t.status = :status OR :status IS NULL) AND (:tag IS NULL OR :tag MEMBER OF t.tags) ORDER BY create_date DESC")
     List<Task> filterNew(@Param("status") Task.TaskStatus status, @Param("tag") Tag tag);
@@ -23,5 +24,7 @@ public interface TaskRepository extends JpaRepository<Task, Integer> {
     @Query("SELECT t FROM Task t WHERE (t.createDate >= :date) ORDER BY create_date DESC")
     List<Task> findAllYear(@Param("date") Date date);
 
-
+    @Override
+    @Query("SELECT title FROM Task t WHERE (t.title = :name) AND (:id IS NULL OR t.id != :id) ")
+    String findByNameAndNotId(@Param("name") String name, @Param("id") Integer id);
 }
diff --git a/src/main/java/ru/ulstu/activity/students/service/TaskNotificationService.java b/src/main/java/ru/ulstu/activity/students/service/TaskNotificationService.java
new file mode 100644
index 0000000..bd9046e
--- /dev/null
+++ b/src/main/java/ru/ulstu/activity/students/service/TaskNotificationService.java
@@ -0,0 +1,20 @@
+package ru.ulstu.activity.students.service;
+
+import org.springframework.stereotype.Service;
+import ru.ulstu.activity.common.service.ActivityNotificationService;
+import ru.ulstu.activity.students.model.Task;
+import ru.ulstu.user.service.MailService;
+
+@Service
+public class TaskNotificationService extends ActivityNotificationService<Task> {
+
+    private final MailService mailService;
+
+    public TaskNotificationService(MailService mailService) {
+        this.mailService = mailService;
+    }
+
+    public void sendCreateNotification(Task task) {
+        throw new RuntimeException("not implemented yet");
+    }
+}
diff --git a/src/main/java/ru/ulstu/activity/students/service/TaskService.java b/src/main/java/ru/ulstu/activity/students/service/TaskService.java
index 0492e0b..244cb33 100644
--- a/src/main/java/ru/ulstu/activity/students/service/TaskService.java
+++ b/src/main/java/ru/ulstu/activity/students/service/TaskService.java
@@ -4,7 +4,7 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import ru.ulstu.activity.common.service.AbstractActivityService;
+import ru.ulstu.activity.common.service.ActivityService;
 import ru.ulstu.activity.deadline.model.Deadline;
 import ru.ulstu.activity.deadline.service.DeadlineService;
 import ru.ulstu.activity.ping.service.PingService;
@@ -41,11 +41,9 @@ import static ru.ulstu.core.util.StreamApiUtils.convert;
 import static ru.ulstu.core.util.StreamApiUtils.convertPageable;
 
 @Service
-public class TaskService extends AbstractActivityService<TaskListDto, Task, TaskDto> {
-
-    private final static int MAX_DISPLAY_SIZE = 40;
-
+public class TaskService extends ActivityService<TaskListDto, Task, TaskDto> {
     private final TaskRepository taskRepository;
+    private final TaskNotificationService taskNotificationService;
     private final SchedulerRepository schedulerRepository;
     private final DeadlineService deadlineService;
     private final TagService tagService;
@@ -54,12 +52,15 @@ public class TaskService extends AbstractActivityService<TaskListDto, Task, Task
 
 
     public TaskService(TaskRepository taskRepository,
+                       TaskNotificationService taskNotificationService,
                        DeadlineService deadlineService,
                        TagService tagService,
                        SchedulerRepository schedulerRepository,
                        EventService eventService,
                        PingService pingService) {
+        super(taskRepository, taskNotificationService, pingService);
         this.taskRepository = taskRepository;
+        this.taskNotificationService = taskNotificationService;
         this.deadlineService = deadlineService;
         this.tagService = tagService;
         this.eventService = eventService;
@@ -81,6 +82,16 @@ public class TaskService extends AbstractActivityService<TaskListDto, Task, Task
         return new TaskListDto(entity);
     }
 
+    @Override
+    protected Task getNewActivity() {
+        return new Task();
+    }
+
+    @Override
+    protected TaskDto getNewActivityDto(Task entity) {
+        return new TaskDto(entity);
+    }
+
     public List<TaskDto> filter(TaskFilterDto filterDto) {
         if (filterDto.getOrder().compareTo("new") == 0) {
             return convert(taskRepository.filterNew(
@@ -111,7 +122,7 @@ public class TaskService extends AbstractActivityService<TaskListDto, Task, Task
         return task;
     }
 
-    private Task copyFromDto(Task task, TaskDto taskDto) throws IOException {
+    protected Task copyFromDto(Task task, TaskDto taskDto) throws IOException {
         task.setTitle(taskDto.getTitle());
         task.setDescription(taskDto.getDescription());
         task.setStatus(taskDto.getStatus() == null ? IN_WORK : taskDto.getStatus());
@@ -283,11 +294,11 @@ public class TaskService extends AbstractActivityService<TaskListDto, Task, Task
         return findAll(offset, count);
     }
 
-    public TaskDto findById(Integer taskId) {
-        return new TaskDto(findTaskById(taskId));
+    public TaskDto findTaskById(Integer taskId) {
+        return new TaskDto(findById(taskId));
     }
 
-    public Task findTaskById(Integer taskId) {
+    public Task findById(Integer taskId) {
         return taskRepository.findById(taskId)
                 .orElseThrow(() -> new EntityNotFoundException("Paper with id=" + taskId + " not found"));
     }
@@ -295,6 +306,6 @@ public class TaskService extends AbstractActivityService<TaskListDto, Task, Task
 
     @Transactional
     public void ping(int taskId) {
-        pingService.addPing(findTaskById(taskId));
+        pingService.addPing(findById(taskId));
     }
 }