@article{4536,
      author       = "Astori, B. and XIIth Congress of the International Society
                      of Photogrammetry in Ottawa 1972",
      title        = "Considerations on the Photogrammetric Survey of Castle
                      Vigevano  ",
      year         = "1972",
      note         = "1 sv., 4 obr., 6 tab.",
}