@article{23838,
      author       = "Nistri, Umberto and OMI and VIII International Congress of
                      Photogrammetry, Stockholm, July 1956",
      title        = "Practical and Constructive Criteria Basic to My Recent
                      Photogrammetric Plotters. Address to the VIII International
                      Congress of Photogrammetry, Stockholm 1956  ",
      year         = "1956",
      note         = "2 sv., 1 sv., 1 sv.",
}