@article{24858,
      author       = "Marckwardt, Werner and XIII. Congress of the International
                      Society for Photogrammetry, Helsinki, 1976. Commission II",
      title        = "The Production of Stereo Orthophotos with the
                      Topocart-Orthophot C Instrument System of VEB Carl Zeiss
                      Jena  ",
      year         = "1976",
      note         = "Resumé v angl., franc., něm., 1 sv.",
}