@inproceedings{PODS-2000-Kreutzer,
	author        = "Stephan Kreutzer",
	booktitle     = "{Proceedings of the 19th Symposium on Principles of Database Systems}",
	doi           = "10.1145/335168.335214",
	isbn          = "1-58113-214-X",
	pages         = "116--125",
	publisher     = "{ACM}",
	title         = "{Fixed-Point Query Languages for Linear Constraint Databases}",
	year          = 2000,
}