@article{29139,
      author       = "Mäkinen, J. and Virtanen, H. and Qi-Xian, Qiu and
                      Liang-Rong, Gu",
      title        = "The Sino-Finnish Absolute Gravity Campaign in 1990  ",
      year         = "1993",
      note         = "Četné tab. a obr. - Liter.",
}