Chanjung Park Seog Park Yoongu Kim S-COI : The Secure Conflicts of Interest Model for Multilevel Secure Database Systems. 146-153 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2973&spage=146 2004 conf/dasfaa/2004 DASFAA db/conf/dasfaa/dasfaa2004.html#ParkPK04