@article{4701,
      author       = "Krumm, Friedhelm and FIG and Meeting of FIG Study Group 5B
                      Survey Control Networks, 7th-9th July 1982, Aalborg",
      title        = "Criterion Matrices for Estimable Quantities  ",
      year         = "1982",
      note         = "Liter., 1 sv.",
}