@inproceedings{FASE-2002-NonnengartRS,
	author        = "Andreas Nonnengart and Georg Rock and Werner Stephan",
	booktitle     = "{Proceedings of the Fifth International Conference on Fundamental Approaches to Software Engineering}",
	doi           = "10.1007/3-540-45923-5_18",
	isbn          = "3-540-43353-8",
	pages         = "264--278",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Formal Requirements Engineering Using Observer Models}",
	volume        = 2306,
	year          = 2002,
}