Dianlong Zhang Harald Lukhaub Werner Zorn A Role-Based Access Control Model and Implementation for Data-Centric Enterprise Applications. 316-327 2001 conf/icics/2001 ICICS http://link.springer.de/link/service/series/0558/bibs/2229/22290316.htm db/conf/icics/icics2001.html#ZhangLZ01