@article{9069,
      author       = "Schmitt, G. and Int. IAG Symp. on Optimis. of Design and
                      Comput. of Control Networks. Sopron, 1977",
      title        = "Experiences with the Second Order Design Problem in
                      Theoretical and Practical Geodetic Networks  ",
      year         = "1977",
      note         = "199500288 ",
}