1. X-GTRBAC: an XML-based policy specification framework and architecture for enterprise-wide access control;Bhatti;ACM Transactions on Information and System Security (TISSEC),2005
2. Securing context-aware applications using environment roles;Covington,2001
3. GEO-RBAC: a spatially aware RBAC;Damian;ACM Transactions on Information and System Security (TISSEC),2007
4. Can Twitter help save lives? A health care social media case study-part I;Emory Healthcare,2011
5. Supporting RBAC with XACML+OWL;Ferrini,2009