@InProceedings{baumgartner-etal:99b,
  author =       "Albert Baumgartner and Carsten Steger and Helmut
                  Mayer and Wolfgang Eckstein and Heinrich Ebner",
  title =        "Automatic Road Extraction in Rural Areas",
  volume =       "XXXII, Part 3--2W5",
  pages =        "107--112",
  booktitle =    "International Archives of Photogrammetry and Remote
                  Sensing",
  year =         "1999"
}