@inproceedings{ESOP-1994-Li94a,
	author        = "Wei Li",
	booktitle     = "{Proceedings of the Fifth European Symposium on Programming}",
	doi           = "10.1007/3-540-57880-3_26",
	editor        = "Donald Sannella",
	isbn          = "3-540-57880-3",
	pages         = "394--408",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Logical Framework for Evolution of Specifications}",
	volume        = 788,
	year          = 1994,
}