@inproceedings{FM-1979-BergG,
	author        = "Helmut K. Berg and Wolfgang K. Giloi",
	booktitle     = "{The Use of Formal Specification of Software}",
	isbn          = "3-540-10442-9",
	pages         = "150--196",
	publisher     = "{Springer-Verlag}",
	series        = "{Informatik-Fachberichte}",
	title         = "{Hierarchical Specification of Abstract Data Types}",
	volume        = 36,
	year          = 1979,
}