@article{33428,
      author       = "Ducarme, B. and Ruymbeke, M. Van and Poitevin, C. and Three
                      Years of Registration with a Superconducting Gravimeter at
                      the Royal Observatory of Belgium",
      title        = "Three Years of Registration with a Superconducting
                      Gravimeter at the Royal Observatory of Belgium  ",
      year         = "1985",
      note         = "10 obr., 6 tab. v textu, 1 sv.",
}