@inproceedings{PPDP-2004-FlescaGZ,
	author        = "Sergio Flesca and Sergio Greco and Ester Zumpano",
	booktitle     = "{Proceedings of the Sixth International Conference on Principles and Practice of Declarative Programming}",
	doi           = "10.1145/1013963.1013977",
	isbn          = "1-58113-819-9",
	pages         = "98--107",
	publisher     = "{ACM}",
	title         = "{Active integrity constraints}",
	year          = 2004,
}