@InProceedings{Gogolla:2002:GTVMT,
  author =       "Martin Gogolla and Paul Ziemann and Sabine Kuske",
  title =        "Towards an Integrated Graph Based Semantics for UML",
  booktitle =    "GT-VMT'2002 Graph Transformation and Visual Modeling
                  Techniques, Barcelona, Spain, 11-12 October 2002",
  editor =       "Paolo Bottoni and Mark Minas",
  publisher =    "Elsevier",
  series =       "ENTCS",
  volume =       "72(3)",
  year =         "2002",
}