@article{33215,
      author       = "Nettleton, L. L. and XII Assemblée Génerale de l'UGGI a
                      Helsinki, 1960",
      title        = "Tests of an Airborne Gravity Meter  ",
      year         = "1960",
      note         = "1 sv., Reprinted for private circulation from Geophysics
                      1960, Vol. XXV, No. 1, aj.",
}