@inproceedings{SLP-1986-Gelder86,
	author        = "Allen Van Gelder",
	booktitle     = "{Proceedings of the Third Symposium on Logic Programming}",
	isbn          = "0-8186-0728-9",
	note          = "long version: JLP 6(1&2): 109-133",
	pages         = "127--138",
	publisher     = "{IEEE-CS}",
	title         = "{Negation as Failure Using Tight Derivations for General Logic Programs}",
	year          = 1986,
}