1. Ferraiolo, D.F., Chandramouli, R., Kuhn, D.R.: Role-Based Access Control, 1st edn. Artech House Publishers (2003)
2. Ferraiolo, D.F., Sandhu, R., Gavrila, S., Kuhn, D.R., Chandramouli, R.: Proposed NIST Standard for Role-Based Access Control. ACM Transactions on Information and System Security 3, 224–274 (2001),
http://csrc.nist.gov/rbac/rbacSTD-ACM.pdf
3. Sandhu, R.S.: Role Hierarchies and Constraints for Lattice-Based Access Controls. In: Proceedings of the European Symposium on Research in Security and Privacy (1996)
4. Miller, J., Fan, M., Sheth, A.P., Kochut, K.: Security in Web-Based Workflow Management Systems. In: Proceedings of the International Workshop on Research Directions in Process Technology, Nancy, France (1997)
5. Jacobson, I., Booch, G., Rumbaugh, J.: The Unified Software Development Process. Addison Wesley Longman, Inc., Amsterdam (1999)