@article{25171,
      author       = "Fischer, W.A. and Hemphill, W.R. and Kover, Allan and XIII.
                      Congress of the International Society for Photogrammetry,
                      Helsinki, 1976. Commission I",
      title        = "Progress in Remote Sensing (1972 - 1976)  ",
      year         = "1976",
      note         = "1 sv.",
}