@article{11982,
      author       = "IAG and Porto, 2004",
      title        = "Gravity, geoid and space missions : GGSM 2004 : IAG
                      International Symposium : Porto, Portugal August 30 -
                      September 3, 2004  ; 1.",
      year         = "2005",
      note         = "Vazba: pevná",
}