@inproceedings{KR-1992-Iwanska,
	author        = "Lucja Iwanska",
	booktitle     = "{Proceedings of the Third International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-262-3",
	pages         = "357--368",
	publisher     = "{Morgan Kaufmann}",
	title         = "{A General Semantic Model of Negation in Natural Language: Representation and Inference}",
	year          = 1992,
}