@article{32217,
      author       = "Horsfall, Robert B. and Vanston, Deborah C. and Journal of
                      Visual Impairment and Blindness, November 1981",
      title        = "Tactual maps: Discriminability of Textures and Shapes  ",
      year         = "1981",
      note         = "1 sv., 2 obr., 1 tab. - Liter.",
}