@inproceedings{FME-1994-Elvang-GoranssonF,
	author        = "Morten Elvang-Gøransson and Robert E. Fields",
	booktitle     = "{Proceedings of the Second International Symposium of Formal Methods Europe: Industrial Benefit of Formal Methods}",
	doi           = "10.1007/3-540-58555-9_95",
	isbn          = "3-540-58555-9",
	pages         = "175--189",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{An Extended VDM Refinement Relation}",
	volume        = 873,
	year          = 1994,
}