diff --git a/html/impl.html b/html/impl.html
index fb58ddd97571bafb6b3d3a736ebf72b72ebb58c9..7a6105c447ddb3978b861c3d2b8facc0be39d94d 100644
--- a/html/impl.html
+++ b/html/impl.html
@@ -504,7 +504,7 @@ inspiration of the Alignment format (that they call the OAEI format)
 that they took as their data model and they use the Alignment format
 as their external representation.
 <br /><small>
-Lourens van der Meij, Antoine Isaac, and Claus Zinn, <a href="">A
+Lourens van der Meij, Antoine Isaac, and Claus Zinn, <a href="http://www.few.vu.nl/~aisaac/papers/STITCH-Repository-ESWC10.pdf">A
     Web-Based Repository Service for Vocabularies and 
     Alignments in the Cultural Heritage Domain</a>, Proc. 7th European
 Semantic Web Conference, Hersonissos (GR), LNCS 6088:394-409, 2010.