@inproceedings{ICEIS-ISAS-2009-FerriniB,
	author        = "Rodolfo Ferrini and Elisa Bertino",
	booktitle     = "{Proceedings of the 11th International Conference on Enterprise Information Systems, Volume 3: ISAS}",
	isbn          = "978-989-8111-86-9",
	pages         = "63--68",
	title         = "{A Comprehensive Approach for Solving Policy Heterogeneity}",
	year          = 2009,
}