@inproceedings{ESEC-1989-Thomas,
	author        = "Martyn Thomas",
	booktitle     = "{Proceedings of the Second European Software Engineering Conference}",
	editor        = "Carlo Ghezzi and John A. McDermid",
	isbn          = "3-540-51635-2",
	pages         = "42--47",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Asking for the Impossible: The State of the Art in Safety-Related Systems}",
	volume        = 387,
	year          = 1989,
}