@inproceedings{PADL-2003-LiM,
	author        = "Ninghui Li and John C. Mitchell",
	booktitle     = "{Proceedings of the Fifth International Symposium on Practical Aspects of Declarative Languages}",
	doi           = "10.1007/3-540-36388-2_6",
	isbn          = "3-540-00389-4",
	pages         = "58--73",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{DATALOG with Constraints: A Foundation for Trust Management Languages}",
	volume        = 2562,
	year          = 2003,
}