D. Laniado, D. Eynard, и M. Colombetti. Semantic Web Application and Perspectives - Fourth Italian Semantic Web Workshop, стр. 192--201. (декабря 2007)
P. Bonatti, и F. Mogavero. POLICY '08: Proceedings of the 2008 IEEE Workshop on Policies for Distributed Systems and Networks, стр. 11--18. Washington, DC, USA, IEEE Computer Society, (2008)