@InProceedings{steger:02,
  author =       "Carsten Steger",
  title =        "Occlusion, Clutter, and Illumination Invariant
                  Object Recognition",
  volume =       "XXXIV, part 3A",
  pages =        "345--350",
  booktitle =    "International Archives of Photogrammetry and
                  Remote Sensing",
  year =         "2002"
}