@inproceedings{VDME-1990-DukeD,
	author        = "David J. Duke and Roger Duke",
	booktitle     = "{Proceedings of the Third International Symposium on Vienna Development Method and Z: Formal Methods in Software Development}",
	doi           = "10.1007/3-540-52513-0_14",
	isbn          = "3-540-52513-0",
	pages         = "244--261",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Towards a Semantics for Object-Z}",
	volume        = 428,
	year          = 1990,
}