@article{6988,
      author       = "Rudenauer, H. and XIII. Congress of the International
                      Society for Photogrammetry, Helsinki, 1976. Commission II",
      title        = "Digitale Datenerfassung mit dem Analytischen Plotter AP/C-3
                       ",
      year         = "1976",
      note         = "1 sv.",
}