@inproceedings{ASF+SDF-1995-HeeringK,
	author        = "Jan Heering and Paul Klint",
	booktitle     = "{Proceedings of the Workshop on Generating Tools From Algebraic Specifications}",
	editor        = "Mark van den Brand and Arie van Deursen and T. B. Dinesh and Jasper F. Th. Kamperman and Eelco Visser",
	pages         = "1--4",
	pdfurl        = "http://ivi.fnwi.uva.nl/tcs/pub/reports/1995/P9504/P9504-1.ps.gz",
	title         = "{The Prehistory of ASF+SDF (1980-1984)}",
	url           = "http://homepages.cwi.nl/~paulk/publications/ASF+SDF95pre.ps",
	year          = 1995,
}