@article{212,
      author       = "Tscherning, Christian C. and Rapp, Richard H. and Goad,
                      Clyde C.",
      title        = "A Comparison of Methods for Computing Gravimetric
                      Quantities from High Degree Spherical Harmonic Expansions  ",
      year         = "1983",
      note         = "1 sv., Papor to be Submitted to Manuscripta Geodaetica, -
                      Tb. v textu",
}