@article{12443,
      author       = "Hradilek, Ludvík and FIG and Meeting of FIG Study Group 5B
                      Survey Control Networks, 7th-9th July 1982, Aalborg",
      title        = "Horizontal and Vertical Survey Control by Three-Dimensional
                      Triangulation  ",
      year         = "1982",
      note         = "Liter., 1 sv.",
}