1. F Cuppens, N Cuppens-Boulahia, T Sans, in CSFW. Nomad: a security model with non atomic actions and deadlines, (2005), pp. 186–196.
2. Elrakaiby Y, Cuppens F, Cuppens-Boulahia N: Formal enforcement and management of obligation policies. Data Knowl. Eng 2012, 71(1):127-147. 10.1016/j.datak.2011.09.001
3. Hilty M, Pretschner A, Basin D, Schaefer C, Walter T: A policy language for distributed usage control. In Proceedings of the 12th European Conference on Research in Computer Security (ESORICS’07). Springer-Verlag, Berlin; 2007:531-546.
4. Moffett JD, Sloman MS: Policy conflict analysis in distributed system management. J. Organ. Comput 1994, 4(1):1-22.
5. Bertino E, Jajodia S, Samarati P: Supporting multiple access control policies in database systems. In Proceedings of the 1996 IEEE Symposium on Security and Privacy. IEEE Computer Society, Washington, D.C.; 1996:94-94.