@inproceedings{ILPS-1995-Toman,
	author        = "David Toman",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-62099-5",
	pages         = "98--112",
	publisher     = "{MIT Press}",
	title         = "{Top-Down beats Bottom-Up for Constraint Based Extensions of Datalog}",
	year          = 1995,
}