diff --git a/html/impl.html b/html/impl.html
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@@ -262,6 +262,17 @@ Bo Fu, Rob Brennan, Declan
 O'Sullivan, <a href="http://www.springerlink.com/content/06m05447rt1726h4/">Cross-Lingual Ontology Mapping - An Investigation of the Impact of Machine Translation</a>, Proc. 4th Asian Semantic Web Conference (ASWC), Shanghai (CN), LNCS 5926:1-15, 2009
 </small>
 </dd>
+<dt>[<a href=""></a>uo_match]</dt>
+<dd>
+The Alignment API has been extended for experimenting with
+context-based matching with upper-level ontologies. Three different
+types of matchers have been implemented depending on their use of
+upper level ontologies. They have been compared with three such
+ontologies (SUMO, DOLCE and OpenCyc).
+<br /><small>
+Viviana Mascardi, Angela Locoro, Paolo Rosso, <a href="http://www.disi.unige.it/person/MascardiV/Download/TKDE-maggio-2009.pdf">Automatic ontology matching via upper ontologies: a systematic evaluation</a>, <i>IEEE Transactions on knowledge and data engineering</i>, to appear (accepted 2009)
+</small>
+</dd>
 </dl>
 </p>