@article{1310,
      author       = "Donker, N.H.W. and Mulder, N.J. and XIII. Congress of the
                      International Society for Photogrammetry, Helsinki, 1976",
      title        = "Analisis of MSS Digital Imagery with the Aid of Principal
                      Component Transform  ",
      year         = "1976",
      note         = "1 sv.",
}