@inproceedings{ILPS-1993-DevienneLR,
	author        = "Philippe Devienne and Patrick Lebègue and Jean-Christophe Routier",
	booktitle     = "{Proceedings of the International Symposium on Logic Programming}",
	isbn          = "0-262-63152-0",
	pages         = "250--265",
	publisher     = "{MIT Press}",
	title         = "{The Emptiness Problem of One Binary Recursive Horn Clause is Undecidable}",
	year          = 1993,
}