@inproceedings{SIGMOD-2003-SionAP,
	author        = "Radu Sion and Mikhail J. Atallah and Sunil Prabhakar",
	booktitle     = "{Proceedings of the 31st ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/872757.872772",
	isbn          = "1-58113-634-X",
	pages         = "98--109",
	publisher     = "{ACM}",
	title         = "{Rights Protection for Relational Data}",
	year          = 2003,
}