@inproceedings{ICLP-1994-KingS,
	author        = "Andy King and Paul Soper",
	booktitle     = "{Proceedings of the 11th International Conference on Logic Programming}",
	isbn          = "0-262-72022-1",
	pages         = "553--568",
	publisher     = "{MIT Press}",
	title         = "{Depth-k Sharing and Freeness}",
	year          = 1994,
}