@article{29810,
      author       = "Henneberg, H. G. and International Symposium on Terrestrial
                      Electromagnetic Distance Measurements and Atmospheric
                      Effects on Angular Measurements, Stockholm, 19 - 24 August
                      1974",
      title        = "Some results of horizontal and vertical refraction
                      investigations in high precision engineering measurements  ",
      year         = "1974",
      note         = "18 obr., 6 tab., 1 seš.",
}