Updated.

app/models/journal_paper.rb

@@ -63,8 +63,9 @@ class JournalPaper
     # title << ( !self.journal_levels.blank? ? "(#{self.journal_levels.collect{|x| x.title}.join(', ')})" : nil)
     if !self.publication_date.nil?
       title << (self.publication_date.strftime("%b. %Y") rescue nil)
+    elsif self.year.present?
+      title << self.year
     end
-    # title << self.year
     title.delete(nil)
     title.join(', ').sub(/^\\s*,/,'').gsub(/,(\s*,)+/,',').strip
   end