@InProceedings{steger:96,
  author =       "Carsten Steger",
  title =        "Extracting Lines Using Differential Geometry and
                  {G}aussian Smoothing",
  volume =       "XXXI, part B3",
  pages =        "821--826",
  booktitle =    "International Archives of Photogrammetry and Remote
                  Sensing",
  year =         "1996"
}