@inproceedings{ILPS-1995-Liu,
	author        = "Mengchi Liu",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-62099-5",
	pages         = "83--97",
	publisher     = "{MIT Press}",
	title         = "{Relationlog: A Typed Extension to Datalog with Sets and Tuples}",
	year          = 1995,
}