add doc at top.

diff --git a/pubmed.org b/pubmed.org
index 80a2e36d4edb95ddbf92b3f27e595a1f5271d7ad..7febb4a4565ddde08eacd4def3377ad15c7822a2 100644 (file)
--- a/pubmed.org
+++ b/pubmed.org
@@ -18,6 +18,7 @@ See http://www.ncbi.nlm.nih.gov/pmc/about/public-access-info/#p3 for details of
 
 For PMID there is one interactive function that inserts a bibtex entry: pubmed-insert-bibtex-from-pmid.
 
+This library is complementary to [[./doi-utils.org]].
 
 * Header
 #+BEGIN_SRC emacs-lisp :tangle pubmed.el