@inproceedings{RE-1991-Wittstadt,
	author        = "Willy Wittstadt",
	booktitle     = "{Proceedings of the Workshop on Requirements Engineering: Structured Analysis and Related Approaches}",
	isbn          = "3-540-54025-3",
	pages         = "191--208",
	publisher     = "{Springer-Verlag}",
	series        = "{Informatik-Fachberichte}",
	title         = "{Structured Analysis: Ein Weg aus der Krise?}",
	volume        = 273,
	year          = 1991,
}