@inproceedings{ALP-PLILP-1998-ClearyL,
	author        = "John G. Cleary and Lunjin Lu",
	booktitle     = "{Proceedings of the 10th International Symposium on Principles of Declarative Programming, Held Jointly with the Seventh International Conference on Algebraic and Logic Programming}",
	doi           = "10.1007/BFb0056629",
	isbn          = "3-540-65012-1",
	pages         = "411--426",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Constructive Negation Using Typed Existence Properties}",
	volume        = 1490,
	year          = 1998,
}