diff --git a/app/models/journal_paper.rb b/app/models/journal_paper.rb
index 6f529d3..d1831c1 100644
--- a/app/models/journal_paper.rb
+++ b/app/models/journal_paper.rb
@@ -193,8 +193,6 @@ class JournalPaper
       value = self.journal_paper_author_types.collect{|type| type.title}.join(',') rescue ""
     when "paper_type"
       value = self.journal_paper_type.title rescue ""
-    when "publication_date"
-      value = p.send(t).strftime("%Y/%m/%d") rescue ""
     when "author_name"
       value = []
       ([I18n.locale]+(Site.first.in_use_locales-[I18n.locale])).each do |locale|