<?xml version="1.0" ?>
<bib> 
{
for $b in doc("bib.xml")//book
let $e := $b/*[contains(string(.), "Suciu") and 
ends-with(local-name (.), "or")] 
where exists ($e) 
return
<book>
{ $b/title }
{ $e }
</book>
}
</bib>

<?xml version="1.0" ?>
<bib>
<book year="1992">
<title>Advanced Programming in the Unix environment</title>
<author>
<last>Stevens</last>
<first>W.</first>
</author>
<publisher>Addison-Wesley</publisher>
<price>65.95</price>
</book>

<book year="2000">
<title>Data on the Web</title>
<author>
<last>Suciu</last>
<first>Dan</first>
</author> 
<publisher>Morgan Kaufmann Publishers</publisher>
<price>39.95</price>
</book>
</bib>