diff --git a/docs/contributors.html b/docs/contributors.html
index be942d0eb..b3c197edc 100644
--- a/docs/contributors.html
+++ b/docs/contributors.html
@@ -241,10 +241,7 @@ the Ant build tool.  He is also serving as the Chairman of this PMC.
 				<b>Jan Matèrne</b> (jhm at apache.org)
 <br />
 Jan is consultant for OOA/D in the computer centre of the government
-of Northrhine Westfalia / Germany. He is the co-author of
-<a href="http://www.galileocomputing.de/katalog/buecher/titel/gp/titelID-341?">
-Rational Rose und UML im Praxiseinsatz</a> the first German book about
-that OOAD-tool.
+of Northrhine Westfalia / Germany.
             </p>
                                 <p>
                 <b>Peter Reilly</b><br />
diff --git a/xdocs/contributors.xml b/xdocs/contributors.xml
index 869b72849..8c7108918 100644
--- a/xdocs/contributors.xml
+++ b/xdocs/contributors.xml
@@ -99,10 +99,7 @@ the Ant build tool.  He is also serving as the Chairman of this PMC.
 				<b>Jan Matèrne</b> (jhm at apache.org)
 <br/>
 Jan is consultant for OOA/D in the computer centre of the government
-of Northrhine Westfalia / Germany. He is the co-author of
-<a href="http://www.galileocomputing.de/katalog/buecher/titel/gp/titelID-341?">
-Rational Rose und UML im Praxiseinsatz</a> the first German book about
-that OOAD-tool.
+of Northrhine Westfalia / Germany.
             </p>
 
             <p>