@inproceedings{FASE02,
  author    = {Andreas Nonnengart and
               Georg Rock and
               Werner Stephan},
  title     = {Formal Requirements Engineering Using Observer Models},
  booktitle = {Fundamental Approaches to Software Engineering, 5th International
               Conference, FASE 2002, held as Part of the Joint European
               Conferences on Theory and Practice of Software, ETAPS 2002,
               Grenoble, France, April 8-12, 2002, Proceedings},
  year      = {2002},
  publisher = {Springer, Lecture Notes in Computer Science, Volume 2306},
  pages     = {264-278}
}