@article{27702,
      author       = "Szabo, D. J. and Craymer, M. R. and Krakiwsky, E. J. and
                      Vanicek, P. and I. Inter. Symp. Mathem. and Physic. Foundat.
                      Geodesy - Stuttgart 1993",
      title        = "Robustness Measures  for Geoddetic Networks  ",
      year         = "1993",
      note         = "Abstr. - Obr. - Liter. 1 sv.",
}