@article{25450,
      author       = "Elmiger, A. and Symposium sur la Triangulation spatiale
                      europeenne, fevrier 1969",
      title        = "Provisional Report to the Permanent Commission for the
                      European Triangulation on the Method used in Swizerland to
                      determine Deviations of the Vertical  ",
      year         = "1969",
      note         = "1 seš.",
}