Liuba Shrira Hong Tian MX: Mobile Object Exchange for Collaborative Applications. 126-150 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2743&spage=126 2003 conf/ecoop/2003 ECOOP db/conf/ecoop/ecoop2003.html#ShriraT03