@inproceedings{FME-1997-LanoBFL,
	author        = "Kevin Lano and Juan Bicarregui and José Luiz Fiadeiro and Antónia Lopes",
	booktitle     = "{Proceedings of the Fourth International Symposium of Formal Methods Europe: Industrial Applications and Strengthened Foundations of Formal Methods}",
	doi           = "10.1007/3-540-63533-5_16",
	isbn          = "3-540-63533-5",
	pages         = "298--317",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Specification of Required Non-determinism}",
	volume        = 1313,
	year          = 1997,
}