Yuan Fa Ya Bing Chen Tok Wang Ling Ting Chen Materialized View Maintenance for XML Documents. 365-371 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3306&spage=365 2004 conf/wise/2004 WISE db/conf/wise/wise2004.html#FaCLC04