@inproceedings{ICALP-1991-BolG,
	author        = "Roland N. Bol and Jan Friso Groote",
	booktitle     = "{Proceedings of the 18th International Colloquium on Automata, Languages and Programming}",
	doi           = "10.1007/3-540-54233-7_157",
	isbn          = "3-540-54233-7",
	pages         = "481--494",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{The Meaning of Negative Premises in Transition System Specifications}",
	volume        = 510,
	year          = 1991,
}