diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/AbstractPublicationWithPublisherExtendedPropertiesStep.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/AbstractPublicationWithPublisherExtendedPropertiesStep.java
index afad4db..4216c40 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/AbstractPublicationWithPublisherExtendedPropertiesStep.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/AbstractPublicationWithPublisherExtendedPropertiesStep.java
@@ -140,14 +140,14 @@ public abstract class AbstractPublicationWithPublisherExtendedPropertiesStep<T e
 
             final Integer numberOfPages = Optional
                 .ofNullable(numberOfPagesParam)
-                .filter(param -> param.matches("\\d*"))
+                .filter(param -> param.matches("\\d+"))
                 .map(param -> Integer.parseInt(param))
                 .orElse(null);
             publication.setNumberOfPages(numberOfPages);
 
             final Integer numberOfVolumes = Optional
                 .ofNullable(numberOfVolumesParam)
-                .filter(param -> param.matches("\\d*"))
+                .filter(param -> param.matches("\\d+"))
                 .map(param -> Integer.parseInt(param))
                 .orElse(null);
             if (numberOfVolumes != null) {
@@ -156,7 +156,7 @@ public abstract class AbstractPublicationWithPublisherExtendedPropertiesStep<T e
 
             final Integer volume = Optional
                 .ofNullable(volumeParam)
-                .filter(param -> param.matches("\\d*"))
+                .filter(param -> param.matches("\\d+"))
                 .map(param -> Integer.parseInt(param))
                 .orElse(null);
             if (volume != null) {
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/PublicationExtendedPropertiesStepModel.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/PublicationExtendedPropertiesStepModel.java
index bc68c88..39cb8ed 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/PublicationExtendedPropertiesStepModel.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/PublicationExtendedPropertiesStepModel.java
@@ -6,7 +6,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
-import java.util.SortedMap;
+import java.util.Optional;
 
 import javax.enterprise.context.RequestScoped;
 import javax.inject.Named;
@@ -64,7 +64,11 @@ public class PublicationExtendedPropertiesStepModel {
     }
     
     public List<String> getLanguageOfPublicationSelectedOptions() {
-        return List.of(languageOfPublication);
+        if (languageOfPublication == null) {
+            return Collections.emptyList();
+        } else {
+            return List.of(languageOfPublication);
+        }
     }
 
     public void setLanguageOfPublication(final String languageOfPublication) {
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher-extented-properties.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher-extented-properties.xhtml
index 67bf5a0..2d85b3e 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher-extented-properties.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher-extented-properties.xhtml
@@ -86,12 +86,31 @@
         <ui:define name="publicationExtendedPropertyWidgets">
 
             <libreccm:localizedStringEditor
+                addButtonLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.label']}"
+                addDialogCancelLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.cancel']}"
+                addDialogLocaleSelectHelp="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.locale.help']}"
+                addDialogLocaleSelectLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.locale.label']}"
+                addDialogSubmitLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.submit']}"
+                addDialogTitle="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.title']}"
+                addDialogValueHelp="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.value.help']}"
+                addDialogValueLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.value.label']}"
                 addMethod="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@#{SciCmsPublicationExtendedPropertiesStepModel.editStepUrlFragment}/edition/@add"
-                readOnly="#{!CmsSelectedDocumentModel.canEdit}"
+                editButtonLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.edit.label']}"
+                editDialogCancelLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.edit.cancel']}"
+                editDialogSubmitLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.edit.submit']}"
+                editDialogTitle="#{SciPublicationsUiMessageBundle['extendedproperties.edition.edit.title']}"
+                editDialogValueHelp="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.value.help']}"
+                editDialogValueLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.add.value.label']}"
                 editMethod="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@#{SciCmsPublicationExtendedPropertiesStepModel.editStepUrlFragment}/edition/@edit"
                 editorId="edition-editor"
                 hasUnusedLocales="#{!SciCmsPublicationWithPublisherExtendedPropertiesStep.unusedEditionLocales.isEmpty()}"
                 objectIdentifier="#{CmsSelectedDocumentModel.itemPath}"
+                readOnly="#{!CmsSelectedDocumentModel.canEdit}"
+                removeButtonLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.remove.label']}"
+                removeDialogCancelLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.remove.cancel']}"
+                removeDialogSubmitLabel="#{SciPublicationsUiMessageBundle['extendedproperties.edition.remove.submit']}"
+                removeDialogText="#{SciPublicationsUiMessageBundle['extendedproperties.edition.remove.text']}"
+                removeDialogTitle="#{SciPublicationsUiMessageBundle['extendedproperties.edition.remove.title']}"
                 removeMethod="#{mvc.basePath}/#{ContentSectionModel.sectionName}/documents/#{CmsSelectedDocumentModel.itemPath}/@#{SciCmsPublicationExtendedPropertiesStepModel.editStepUrlFragment}/edition/@remove"
                 title="#{SciPublicationsUiMessageBundle['extendedproperties.edition.editdialog.title']}"
                 unusedLocales="#{SciCmsPublicationWithPublisherExtendedPropertiesStep.unusedEditionLocales}"
diff --git a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
index 1f069b8..faee9cf 100644
--- a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
+++ b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
@@ -467,3 +467,20 @@ collectedvolume.basicproperties.articles.start_page=First page
 collectedvolume.basicproperties.articles.end_page=Last Page
 collectedvolume.basicproperties.articles.header=Articles
 articleincollectedvolume.basicproperties.collectedvolume.none=This article is not assigned to a collected volume.
+extendedproperties.edition.add.label=Add
+extendedproperties.edition.add.cancel=Cancel
+extendedproperties.edition.add.locale.help=The language of the edition value.
+extendedproperties.edition.add.locale.label=Language
+extendedproperties.edition.add.submit=Add
+extendedproperties.edition.add.title=Add edition label
+extendedproperties.edition.add.value.help=The label of the edition, for example: 3rd, revised and extendend edition
+extendedproperties.edition.add.value.label=Edition
+extendedproperties.edition.edit.label=Edit
+extendedproperties.edition.edit.cancel=Cancel
+extendedproperties.edition.edit.submit=Save
+extendedproperties.edition.edit.title=Edit edition label
+extendedproperties.edition.remove.label=Remove
+extendedproperties.edition.remove.cancel=Cancel
+extendedproperties.edition.remove.submit=Remove
+extendedproperties.edition.remove.text=Are you sure to remove the following edition label:
+extendedproperties.edition.remove.title=Remove edition label
diff --git a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
index 6e38bef..fa9cd98 100644
--- a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
+++ b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
@@ -467,3 +467,20 @@ collectedvolume.basicproperties.articles.start_page=Erste Seite
 collectedvolume.basicproperties.articles.end_page=Letzte Seite
 collectedvolume.basicproperties.articles.header=Artikel
 articleincollectedvolume.basicproperties.collectedvolume.none=Dieser Artikel wurde noch keinem Sammelband zugewiesen.
+extendedproperties.edition.add.label=Hinzuf\u00fcgen
+extendedproperties.edition.add.cancel=Abbrechen
+extendedproperties.edition.add.locale.help=Die Sprache der Angabe der Ausgabe.
+extendedproperties.edition.add.locale.label=Sprache
+extendedproperties.edition.add.submit=Hinzuf\u00fcgen
+extendedproperties.edition.add.title=Angabe zur Ausgabe hinzuf\u00fcgen
+extendedproperties.edition.add.value.help=Die Bezeichnung der Ausgabe, zum Beispiel: 3., \u00fcberarbeitete und erweiterte Auflage.
+extendedproperties.edition.add.value.label=Auflage
+extendedproperties.edition.edit.label=Bearbeiten
+extendedproperties.edition.edit.cancel=Abbrechen
+extendedproperties.edition.edit.submit=Speichern
+extendedproperties.edition.edit.title=Bezeichnung der Ausgabe bearbeiten
+extendedproperties.edition.remove.label=Entfernen
+extendedproperties.edition.remove.cancel=Abbrechen
+extendedproperties.edition.remove.submit=Entfernen
+extendedproperties.edition.remove.text=Sind Sie sicher, dass Sie die folgenden Ausgaben-Bezeichnung entfernen wollen:
+extendedproperties.edition.remove.title=Angabe zur Ausgabe entfernen