XQuery from the experts :  a guide to the W3C XML query language / 
editor: Howard Katz ; authors Don Chamberlin ... [et al.].. 
 - xxvi, 484 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0321180607 (alk. paper) 
<br/><br/><label>LCCN: </label>2003012521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Query languages (Computer science)
<br/><br/><label>LC Class. No.: </label>QA76.7  / .X64 2004