@article{22569,
      author       = "Tewinkel, G. C. and Synposium on Aerotriangalation
                      International Society of Photogrammetry, London, England,
                      August 9, 1971",
      title        = "Photogrammetric Geodesy  ",
      year         = "1971",
      note         = "1 seš., Prepared for Presentation at the Commission III",
}