@article{4505,
      author       = "VÚGTK and Conference of ISP Working Group IV/1 on Digital
                      Terrain Model held Bratislava and Modra - Harmonia in
                      October 1 - 3, 1969",
      title        = "Conference of ISP Working Group IV/1 on Digital Terrain
                      Model held Bratislava and Modra - Harmonia in October 1 - 3,
                      1969  ",
      year         = "1969",
      note         = "1 seš., 5 obr.",
}