@InProceedings{Breu:1997:ECOOP,
  author =       "Ruth Breu and Ursula Hinkel and Christoph Hofmann and
                  Cornel Klein and Barbara Paech and Bernhard Rumpe and
                  Veronika Thurner",
  title =        "Towards a Formalization of the {Unified Modeling
                  Language}",
  booktitle =    "ECOOP'97 -- Object-Oriented Programming, 11th European
                  Conference",
  year =         "1997",
  editor =       "Mehmet Aksit and Satoshi Matsuoka",
  volume =       "1241",
  series =       "LNCS",
  pages =        "344--366",
  publisher =    "Springer",
}