Katica Dimitrova Maged El-Sayed Elke A. Rundensteiner Order-Sensitive View Maintenance of Materialized XQuery Views. 144-157 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2813&spage=144 2003 conf/er/2003 ER db/conf/er/er2003.html#DimitrovaER03