@article{4267,
      author       = "Rapp, Richard H. and Ohio State University and Inter.
                      Summer School of Theor. Geodesy. Assisi, Italy, 23.5. - 3.
                      6. 1988",
      title        = "Combination of Satellite. Altimeter and Terrestrial Gravity
                      Data  ",
      year         = "1988",
      note         = "Obr. a tab. - Liter., 1 sv.",
}