@inproceedings{ICLP-1987-RamamohanaraoS87,
	author        = "Kotagiri Ramamohanarao and John Shepherd",
	booktitle     = "{Proceedings of the Fourth International Conference on Logic Programming, 2 Volumes}",
	isbn          = "0-262-12125-5",
	pages         = "1014--1033",
	publisher     = "{MIT Press}",
	title         = "{Answering Queries in Deductive Database Systems}",
	year          = 1987,
}