@article{21303,
      author       = "Vassiliou, A. A. and Schwarz, K. P. and Univers. - Surv.
                      Engng. and 19. IUGG - Vancouver, Aug. 9-22, 1987",
      title        = "On the Combination of Gravity Data with Other Geophysical.
                      Data for the Solution of the Inverse Gravimetric Problem  ",
      year         = "1987",
      note         = "Obr. v textu. - Liter. - Abstr., 1 sv.",
}