1. Role-based access control models;Sandhu;IEEE Comput.,1996
2. E.S. Barka, R. Sandhu, Framework for role-based delegation models, in: 16th Annual Computer Security Applications Conference, December 2000. http://www.acsac.org/2000/abstracts/34.html.
3. E.S. Barka, R. Sandhu, A role-based delegation model and some extensions, in: 23rd National Information Systems Security Conference, October 2000. http://csrc.nist.gov/nissc/2000/proceedings/papers/021.pdf.
4. A model of oasis role-based access control and its support for active security;Yao,2001
5. Role-based access control features in commercial database management systems;C. Ramaswamy,1998