@article{403,
      author       = "Pravda, Ján and VIII. International Cartographic
                      Conference, Moscow, USSR, August 1976 and VIII.
                      Meždunarodnaja Kartografičeskaja Konferencija and VIII.
                      Conférence Cartographique Internationale",
      title        = "A New Selection Method of Quantative Intervals in Thematic
                      Cartography",
      year         = "1976",
      note         = "separát, 1 sešit",
}