@article{13409,
      author       = "Corten, F.L.J.H. and Heimes, F.J. and XIII. Congress of the
                      International Society for Photogrammetry, Helsinki, 1976.
                      Commission I",
      title        = "Integrated Flight and Navigations Systems  ",
      year         = "1976",
      note         = "1 sv.",
}