@inproceedings{ICALP-1978-EhrigKP,
	author        = "Hartmut Ehrig and Hans-Jörg Kreowski and Peter Padawitz",
	booktitle     = "{Proceedings of the Fifth Colloquium on Automata, Languages and Programming}",
	doi           = "10.1007/3-540-08860-1_16",
	isbn          = "3-540-08860-1",
	pages         = "205--226",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Stepwise Specification and Implementation of Abstract Data Types}",
	volume        = 62,
	year          = 1978,
}