@INPROCEEDINGS{Zara-CTUWorkshop92,
  Html =   { Zara-CTUWorkshop92
                  },
  AUTHOR =   {{\v Z}{\'a}ra, Ji{\v r}{\'\i } and Werner,
                  Tom{\'a}{\v s}},
  ADDRESS =   {Zikova 4, 16635 Prague, Czech Republic},
  BOOKTITLE =   {CTU Workshop 92},
  PUBLISHER =   {Czech Technical University},
  TITLE =   {Textures of Natural Surfaces},
  YEAR =   {1992},
}