@TechReport{Cook:1999:TRAM,
  author =       "Steve Cook and Anneke Kleppe and Richard Mitchell and
                  Bernhard Rumpe and Jos Warmer and Alan Cameron Wills",
  title =        "The {Amsterdam} Manifesto on {OCL}",
  institution =  "Technische Universit{\"a}t M{\"u}nchen",
  year =         "1999",
  number =       "TUM-I9925",
  month =         dec,
}