@article{41450,
      author       = "XIII. Congress of the International Society for
                      Photogrammetry. Helsinki, July 11 to 23, 1976. Commission V",
      title        = "Comparison of Optical Contouring Methods",
      note         = "S. 116 - 120. - Cena 20,-  1976, Photogrammetric
                      Engineering and Remote Sensing, Vol. 42, No. 1.",
}