@article{28624,
      author       = "XVIII Brazilian Congress of Cartography, 3 - 9 September
                      1997, Riocentro, Rio de Janeiro, Brazil",
      title        = "Scientific assembly of the International Association of
                      Geodesy (IAG 97) in conjuction with XVIII brazilian Congress
                      of Cartography : 3 - 9 September 1997, Riocentro, Rio de
                      Janeiro, Brazil : Book of abstracts  ",
      year         = "1997",
      note         = "Soc. Brasil. Cartogr., IAG., 1 sv.",
}