Basel Katt, Xinwen Zhang, Ruth Breu, Michael Hafner, Jean-Pierre Seifert. A general obligation model and continuity: enhanced policy enforcement engine for usage control. In Indrakshi Ray, Ninghui Li, editors, SACMAT 2008, 13th ACM Symposium on Access Control Models and Technologies, Estes Park, CO, USA, June 11-13, 2008, Proceedings. pages 123-132, ACM, 2008. [doi]
Abstract is missing.