@article{21328,
      author       = "Otero, J. and 2.Hotine-Marussi Symposium on Mathematical
                      Geodesy, Pisa, Italia, 5-8.6.1989",
      title        = "On the Global Solvability of the Fixed Gravimetric Boundary
                      Value Problem  ",
      year         = "1989",
      note         = "Liter. - Obr. v textu.",
}