6SOLWORTH J A, SLOAN R H. A layered design of discretionary access controls with decidable safety properties [C]. Proceedings of 2004 IEEE Symposium on Security and Privacy,Berkeley,IEEE Computer Society, 2004.
7ACEVEDO M T, FILLINGHAM D, NICOLETTOS J L. Enterprise security applications of partition rule based access control(PRBAC) [C]. Proceedings of IEEE Sixth Workshop on Enabling Technologies: Infrastructure for Collaborative Enterprises, MIT, Cambridge. Mass. 1997.
