@article{12004,
      author       = "Coron, S. and Guillaume, A. and XVIII Gen. Assembly IUGG
                      Hamburg, August 1983",
      title        = "Gravity Variations with Volcanic Activity on Mount Etna
                      (Sicily). Preliminary Results  ",
      year         = "1983",
      note         = "Liter. - Obr. a tb. v textu., 1 sv.",
}