added a link to Norms article, Daniel
diff --git a/doc/catalog.html b/doc/catalog.html
index 3437844..389b639 100644
--- a/doc/catalog.html
+++ b/doc/catalog.html
@@ -385,7 +385,9 @@
 <ul>
 <li>You can find an good rant from Norm Walsh about <a href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the
     need for catalogs</a>, it provides a lot of context informations even if
-    I don't agree with everything presented.</li>
+    I don't agree with everything presented. Norm also wrote a more recent
+    article <a href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML
+    entities and URI resolvers</a> describing them.</li>
 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML
     catalog proposal</a> from John Cowan</li>
 <li>The <a href="http://www.rddl.org/">Resource Directory Description