Kathy Bohrer Xuan Liu Sean McLaughlin Edith Schonberg Moninder Singh Object Oriented XML Query by Example. 323-329 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2814&spage=323 2003 conf/er/2003w ER (Workshops) db/conf/er/erw2003.html#BohrerLMSS03