@article{9061,
      author       = "Zarzycki, J.M. and XIII. Congress of the International
                      Society for Photogrammetry, Helsinki, 1976. Commission IV",
      title        = "Experience with the Automated Contouring by Gestalt
                      Photomapper GPM - 2 for Production of 1 : 50 000 Maps  ",
      year         = "1976",
      note         = "1 sv.",
}