@article{32901,
      author       = "Dittfeld, Hans-Jürgen and Intern.Symp.Geod. a. Phys.Earth,
                      Postdam, 1988",
      title        = "Temporal trends in the variations of tidal parameters  ",
      year         = "1988",
      note         = "Liter. - 11 příl. obr. - 1 sv.",
}