diff --git a/sci-publications/src/main/java/org/scientificcms/publications/Authorship.java b/sci-publications/src/main/java/org/scientificcms/publications/Authorship.java
index 8bd96c4..0e38a86 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/Authorship.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/Authorship.java
@@ -131,6 +131,9 @@ public class Authorship implements Serializable, Comparable<Authorship> {
         if (authorshipId != other.getAuthorshipId()) {
             return false;
         }
+        if (!Objects.equals(uuid, other.getUuid())) {
+            return false;
+        }
         if (editor != other.isEditor()) {
             return false;
         }
@@ -156,8 +159,8 @@ public class Authorship implements Serializable, Comparable<Authorship> {
         return String.format("%s{ "
                                  + "authorshipId = %d, "
                                  + "uuid = %s, "
-                                 + "author = %s"
-                                 + "editor = %b,"
+                                 + "author = %s " 
+                                 + "editor = %b, "
                                  + "authorOrder = %d%s "
                                  + "}",
                              super.toString(),
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/contenttypes/ProceedingsItem.java b/sci-publications/src/main/java/org/scientificcms/publications/contenttypes/ProceedingsItem.java
index 9d887ac..32cb4f5 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/contenttypes/ProceedingsItem.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/contenttypes/ProceedingsItem.java
@@ -8,7 +8,6 @@ package org.scientificcms.publications.contenttypes;
 import com.arsdigita.cms.contenttypes.ui.ProceedingsCreateForm;
 import com.arsdigita.cms.contenttypes.ui.ProceedingsPropertiesStep;
 
-import jdk.jfr.ContentType;
 import org.librecms.CmsConstants;
 import org.librecms.contenttypes.AuthoringKit;
 import org.librecms.contenttypes.AuthoringStep;
diff --git a/sci-publications/src/test/java/org/scientificcms/publications/EqualsAndHashCodeTest.java b/sci-publications/src/test/java/org/scientificcms/publications/EqualsAndHashCodeTest.java
index 8de3ade..5a3c62d 100644
--- a/sci-publications/src/test/java/org/scientificcms/publications/EqualsAndHashCodeTest.java
+++ b/sci-publications/src/test/java/org/scientificcms/publications/EqualsAndHashCodeTest.java
@@ -11,13 +11,12 @@ import org.junit.runners.Parameterized;
 import org.libreccm.tests.categories.UnitTest;
 import org.libreccm.testutils.EqualsVerifier;
 import org.librecms.assets.Organization;
+import org.librecms.assets.Person;
 
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Locale;
 
-
-
 /**
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
@@ -63,6 +62,18 @@ public class EqualsAndHashCodeTest extends EqualsVerifier {
         volume2.getTitle().addValue(Locale.ENGLISH, "Test 2");
         verifier.withPrefabValues(CollectedVolume.class, volume1, volume2);
 
+        final Person author1 = new Person();
+        author1.setDisplayName("Max Mustermann");
+        final Person author2 = new Person();
+        author2.setDisplayName("John Doe");
+        verifier.withPrefabValues(Person.class, author1, author2);
+
+        final Publication publication1 = new Publication();
+        publication1.getTitle().addValue(Locale.ENGLISH, "Alpha");
+        final Publication publication2 = new Publication();
+        publication2.getTitle().addValue(Locale.ENGLISH, "Bravo");
+        verifier.withPrefabValues(Publication.class, publication1, publication2);
+
         final Journal journal1 = new Journal();
         journal1.setTitle("Journal 1");
         journal1.setFirstYear(1980);
@@ -70,28 +81,34 @@ public class EqualsAndHashCodeTest extends EqualsVerifier {
         journal2.setTitle("Journal 2");
         journal2.setFirstYear(2004);
         verifier.withPrefabValues(Journal.class, journal1, journal2);
-        
+
         final Publisher publisher1 = new Publisher();
         publisher1.setName("publisher1");
         final Publisher publisher2 = new Publisher();
         publisher2.setName("publisher2");
         verifier.withPrefabValues(Publisher.class, publisher1, publisher2);
-        
+
         final Organization organization1 = new Organization();
         organization1.setName("Orga 1");
         final Organization organization2 = new Organization();
         organization2.setName("Orga 2");
-        verifier.withPrefabValues(Organization.class, 
-                                  organization1, 
+        verifier.withPrefabValues(Organization.class,
+                                  organization1,
                                   organization2);
-        
+
         final Proceedings proceedings1 = new Proceedings();
         proceedings1.getTitle().addValue(Locale.ENGLISH, "Proceedings 1");
         final Proceedings proceedings2 = new Proceedings();
         proceedings2.getTitle().addValue(Locale.ENGLISH, "Proceedings 2");
-        verifier.withPrefabValues(Proceedings.class, 
-                                  proceedings1, 
+        verifier.withPrefabValues(Proceedings.class,
+                                  proceedings1,
                                   proceedings2);
+        
+        final Series series1 = new Series();
+        series1.getTitle().addValue(Locale.ENGLISH, "Series Alpha");
+        final Series series2 = new Series();
+        series2.getTitle().addValue(Locale.ENGLISH, "Series Bravo");
+        verifier.withPrefabValues(Series.class, series1, series2);
     }
 
 }
diff --git a/sci-publications/src/test/java/org/scientificcms/publications/contenttypes/EqualsAndHashCodeTest.java b/sci-publications/src/test/java/org/scientificcms/publications/contenttypes/EqualsAndHashCodeTest.java
index 2403c24..a6e0090 100644
--- a/sci-publications/src/test/java/org/scientificcms/publications/contenttypes/EqualsAndHashCodeTest.java
+++ b/sci-publications/src/test/java/org/scientificcms/publications/contenttypes/EqualsAndHashCodeTest.java
@@ -23,6 +23,7 @@ import org.librecms.lifecycle.LifecycleDefinition;
 import org.scientificcms.publications.CollectedVolume;
 import org.scientificcms.publications.Journal;
 import org.scientificcms.publications.Proceedings;
+import org.scientificcms.publications.Publication;
 import org.scientificcms.publications.assets.PrefabAssetsProvider;
 
 import java.util.Arrays;
@@ -58,7 +59,7 @@ public class EqualsAndHashCodeTest extends EqualsVerifier {
     public EqualsAndHashCodeTest(final Class<?> clazz) {
         super(clazz);
     }
-    
+
     @Override
     protected void addSuppressWarnings(final EqualsVerifierApi<?> verifier) {
         super.addSuppressWarnings(verifier);
@@ -154,8 +155,12 @@ public class EqualsAndHashCodeTest extends EqualsVerifier {
         lifecycle2.setDefinition(lifecycleDef2);
         lifecycle2.setStarted(false);
         verifier.withPrefabValues(Lifecycle.class, lifecycle1, lifecycle2);
+
+        final Publication publication1 = new Publication();
+        publication1.getTitle().addValue(Locale.ENGLISH, "Alpha");
+        final Publication publication2 = new Publication();
+        publication2.getTitle().addValue(Locale.ENGLISH, "Bravo");
+        verifier.withPrefabValues(Publication.class, publication1, publication2);
     }
-    
-    
 
 }