getting text from external xml file

Hi !

I would like to add on my titlepage a text (version number) coming from
an external non docbook xml file.

In the facts : I use maven, so I have a pom.xml defining the version
number of my project like this :

<project xmlns="http://maven.apache.org/POM/4.0.0"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <name>My Project</name>

    <artifactId>my-project</artifactId>

    <groupId>my.group</groupId>

    <version>1.5</version>

    [...]

I would like to get the value contained in <version> to add it
dynamicaly on the titlepage, under my title (I've rewritten the
book.titlepage.recto template in a xsl file).

Is there a way to do that ? in the xsl or directly in the docbook file,
I could add it in the title or in the bookinfo section...

thanks in advance,

Marie.