@article{26438,
      author       = "Gächter, B. F. and Huiser, A. M. J. and 19. IUGG -
                      Vancouver, Aug. 9-22, 1987",
      title        = "The rapid precision levelling system projects  ",
      year         = "1987",
      note         = "Obr. v textu. - Liter., 1 sv.",
}