@InProceedings{mayer-etal:97,
  author =       "Helmut Mayer and Ivan Laptev and Albert Baumgartner
                  and Carsten Steger",
  title =        "Automatic Road Extraction Based on Multi-Scale
                  Modeling, Context, and Snakes",
  volume =       "XXXII, part 3--2W3",
  pages =        "106--113",
  booktitle =    "International Archives of Photogrammetry and Remote
                  Sensing",
  year =         "1997"
}