@article{38874,
      author       = "Hobbie, D. and XIII. Congress of the International Society
                      for Photogrammetry, Helsinki, 1976. Commission II",
      title        = "The Zeiss G.2 STEREOCORD: a Simple stereoplotter for
                      computer supported plotting  ",
      year         = "1976",
      note         = "1 sv.",
}