@inproceedings{WSA-1993-Monsuez,
	author        = "Bruno Monsuez",
	booktitle     = "{Proceedings of the Third International Workshop on Static Analysis}",
	doi           = "10.1007/3-540-57264-3_47",
	isbn          = "3-540-57264-3",
	pages         = "267--281",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Polymorphic Types and Widening Operators}",
	volume        = 724,
	year          = 1993,
}