@article{19524,
      author       = "Brouwer, Frits J.J. and Veen, Jaap van der and Marel, Hans
                      van der and EUREF - Symposium, Sofia, 1997",
      title        = "National report of the Netherlands. Draft  ",
      year         = "1997",
      note         = "1 sv. - nestr.",
}