@inproceedings{ESEC-FSE-1997-Rushby,
	author        = "John M. Rushby",
	booktitle     = "{Proceedings of the Sixth European Software Engineering Conference / Fifth Symposium on Foundations of Software Engineering}",
	doi           = "10.1145/267895.267898",
	editor        = "Mehdi Jazayeri and Helmut Schauer",
	isbn          = "3-540-63531-9",
	pages         = "4--19",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Subtypes for Specifications}",
	volume        = 1301,
	year          = 1997,
}