@inproceedings{ESEC-1987-Craigen,
	author        = "Dan Craigen",
	booktitle     = "{Proceedings of the First European Software Engineering Conference}",
	doi           = "10.1007/BFb0022132",
	editor        = "Howard K. Nichols and Dan Simpson",
	isbn          = "3-540-18712-X",
	pages         = "396--404",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Strengths and Weaknesses of Program Verification Systems}",
	volume        = 289,
	year          = 1987,
}