@article{9911,
      author       = "Torlegard, Kennert and XIII. Congress of the International
                      Society for Photogrammetry, Helsinki, 1976. Commission V",
      title        = "Free Space Determination for Large Railway Cargoes by
                      Stereophotogrammetry  ",
      year         = "1976",
      note         = "1 seš.",
}