@article{27208,
      author       = "Riga, 2006",
      title        = "Report of the symposium of the IAG sub-commission 1.3a
                      Europe  (EUREF) held in Riga, 14-17 June 2006 ; Reports of
                      the EUREF technical working group (TWG) ",
      year         = "2007",
      note         = "Vazba: brož",
}