L. Kagal, T. Berners-Lee, D. Connolly, and D. Weitzner. POLICY '06: Proceedings of the Seventh IEEE International Workshop on Policies for Distributed Systems and Networks, page 205--214. Washington, DC, USA, IEEE Computer Society, (2006)
J. Coi, and D. Olmedilla. IAT '07: Proceedings of the 2007 IEEE/WIC/ACM International Conference on Intelligent Agent Technology, page 450--453. Washington, DC, USA, IEEE Computer Society, (2007)
Q. Ni, E. Bertino, and J. Lobo. SACMAT '08: Proceedings of the 13th ACM symposium on Access control models and technologies, page 133--142. New York, NY, USA, ACM, (2008)
J. Coi, D. Olmedilla, S. Zerr, P. Bonatti, and L. Sauro. IEEE International Policies for Distributed Systems and Networks (POLICY 2008), Palisades, NY, USA, IEEE Computer Society, (June 2008)