diff --git a/en_US.ISO8859-1/articles/building-products/article.xml b/en_US.ISO8859-1/articles/building-products/article.xml
index 4dab6d5242..bd65dc1b8b 100644
--- a/en_US.ISO8859-1/articles/building-products/article.xml
+++ b/en_US.ISO8859-1/articles/building-products/article.xml
@@ -441,9 +441,7 @@
     <title>Collaborating with FreeBSD</title>
 
     <para>Open-source projects like FreeBSD offer finished code of a
-      very high quality <citation>Cov2005</citation>.  Previous
-      studies have examined the effect of source code availability on
-      software development <citation>Com2004</citation>.</para>
+      very high quality.</para>
 
     <para>While access to quality source code can reduce the cost of
       initial development, in the long-term the costs of managing
@@ -768,23 +766,6 @@ This speeds up arg reduction by a factor of 2 for |x| between 3*pi/4 and
         <year>1996</year>
       </copyright>
     </biblioentry>
-    <biblioentry xreflabel="Com2004">
-      <abbrev>Com2004</abbrev>
-      <citetitle><link xlink:href="http://csdl.computer.org/comp/mags/so/2004/01/s1028.pdf">How
-          is Open-Source Affecting Software
-          Development?</link></citetitle>
-      <authorgroup>
-        <author><personname><firstname>Diomidis</firstname><surname>Spinellis</surname></personname></author>
-        <author><personname><firstname>Clemens</firstname><surname>Szyperski</surname></personname></author>
-      </authorgroup>
-      <citetitle>IEEE Computer</citetitle>
-      <copyright>
-        <year>Jan/Feb 2004</year>
-      </copyright>
-      <publisher>
-        <publishername>IEEE Computer Society</publishername>
-      </publisher>
-    </biblioentry>
     <biblioentry>
       <abbrev>ComGuide</abbrev>
       <citetitle><link xlink:href="&url.articles.committers-guide;">Committer's
@@ -796,17 +777,6 @@ This speeds up arg reduction by a factor of 2 for |x| between 3*pi/4 and
         <year>2005</year>
       </copyright>
     </biblioentry>
-    <biblioentry>
-      <abbrev>Cov2005</abbrev>
-      <citetitle><link xlink:href="http://www.coverity.com/news/nf_news_06_27_05_story_9.html">Coverity
-          study on kernel security holes in Linux and FreeBSD</link></citetitle>
-      <authorgroup>
-        <author><orgname>Coverity Inc.</orgname></author>
-      </authorgroup>
-      <copyright>
-        <year>2005</year>
-      </copyright>
-    </biblioentry>
     <biblioentry>
       <abbrev>GoldGab2005</abbrev> <citetitle><link xlink:href="http://dreamsongs.com/IHE/IHE.html">Innovation Happens
           Elsewhere: Open Source as Business Strategy</link></citetitle>