@inproceedings{VDM-1978-Lucas,
	author        = "Peter Lucas",
	booktitle     = "{The Vienna Development Method: The Meta-Language}",
	doi           = "10.1007/3-540-08766-4_8",
	isbn          = "3-540-08766-4",
	pages         = "1--23",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{On the Formalization of Programming Languages: Early History and Main Approaches}",
	volume        = 61,
	year          = 1978,
}