@InCollection{Barbier:2001:inSADDI,
  author =       "Franck Barbier and Brian Henderson-Sellers and Andreas L.
                  Opdahl and Martin Gogolla",
  title =        "The Whole-Part Relationship in the {Unified Modeling
                  Language}: A New Approach",
  booktitle =    "Unified Modeling Language: Systems Analysis, Design and
                  Development Issues",
  publisher =    "Idea Publishing Group",
  year =         "2001",
  editor =       "Keng Siau and Terry Halpin",
  chapter =      "12",
  pages =        "185--209",
  isbn =         "i-930708-05-X",
}