@inproceedings{ICLP-1991-Inoue,
	author        = "Katsumi Inoue",
	booktitle     = "{Proceedings of the Eighth International Conference on Logic Programming}",
	isbn          = "0-262-56058-5",
	pages         = "490--504",
	publisher     = "{MIT Press}",
	title         = "{Extended Logic Programs with Default Assumptions}",
	year          = 1991,
}