@article{33329,
      author       = "Ebner, H. and XIIth Congress of the International Society
                      of Photogrammetry in Ottawa 1972",
      title        = "Theoretical Accuracy Models for Block Triangulation  ",
      year         = "1972",
      note         = "Zvl. ot. : "Bildmessung und Luftbildwesen",1972/5, 40., s.
                      214-221., 1 sv.",
}