<?xml version="1.0"?>
-<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
+<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY appname "Viking">
<!ENTITY app "<application>Viking</application>">
<!ENTITY appversion "1.5">
</formalpara>
</section>
+<xi:include href="attribution.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
+
</article>