diff -r 07444815c0bd -r 8e2e4557fa75 plugins/redmine_bibliography/app/helpers/publications_helper.rb
--- a/plugins/redmine_bibliography/app/helpers/publications_helper.rb
+++ b/plugins/redmine_bibliography/app/helpers/publications_helper.rb
@@ -134,9 +134,9 @@
   s= ""
 
   if link_class == "Author"
-    s << link_to_author(Author.find(link_id), {}, :class => 'author_link')
+    s << link_to_author(Author.find(link_id.to_i))
   else
-    s << link_to_user(User.find(link_id), :class => 'publication_project')
+    s << link_to_user(User.find(link_id.to_i))
   end
 
   s.html_safe