Erik Rissanen, Babak Sadighi Firozabadi, Marek J. Sergot. Towards a Mechanism for Discretionary Overriding of Access Control. In Bruce Christianson, Bruno Crispo, James A. Malcolm, Michael Roe, editors, Security Protocols, 12th International Workshop, Cambridge, UK, April 26-28, 2004. Revised Selected Papers. Volume 3957 of Lecture Notes in Computer Science, pages 312-319, Springer, 2004.
Abstract is missing.