@article{11300,
      author       = "Grafarend, Erik W. and 19. Inter. Association of Geodesy -
                      Gen. Assembly, Vancouver, Aug. 9-22,1987",
      title        = "The Geoid and Gravimetric. Boundary Value Problem  ",
      year         = "1987",
      note         = "Liter., 1 sv.",
}