Approval.

backend/ru/exhibitions.json

@@ -50,6 +50,8 @@
         "obj_desc_in_exhibition_explica": "\"C-Text\": Ein spezifisch f\u00fcr die Ausstellung erstellter Objekt-Text. ",
         "publications": "Publications",
         "linked_publication": "A publication has been linked",
-        "unlinked_publication": "Removed link to a publication"
+        "unlinked_publication": "Removed link to a publication",
+        "link_a_contributor": "Link a contributor",
+        "contributor_explica": "Here contributors to the exhibition can be linked. Once the contributor can be found in the controlled vocabulary, they can be searched and selected by typing in the input field. To select, click on the respective entry in the drop-down list that appears as you type."
     }
 }