<?xml version="1.0" encoding="utf-8"?>
<authors xmlns:html="http://www.w3.org/1999/xhtml">
 <author uid="arthur">
  Arthur de Jong &lt;<html:a href="mailto:arthur@ch.tudelft.nl">arthur@ch.tudelft.nl</html:a>&gt;
 </author>
 <author uid="nobody">
  Who's this &lt;nobody@example.com&gt;
 </author>
 <author uid="root">
  Superman &lt;root@localhost&gt;
 </author>
</authors>