@InProceedings{hinz-etal:99,
  author =       "Stefan Hinz and Albert Baumgartner and Carsten
                  Steger and Helmut Mayer and Wolfgang Eckstein and
                  Heinrich Ebner and Bernd Radig",
  title =        "Road Extraction in Rural and Urban Areas",
  editor =       "Wolfgang F{\"o}rstner and Claus-Eberhard Liedtke and
                  J{\"u}rgen B{\"u}ckner",
  pages =        "133--153",
  booktitle =    "Semantic Modeling for the Acquisition of Topographic
                  Information from Images and Maps",
  year =         "1999"
}