@ARTICLE{NavaraPtakJPAA89,
  IS = { zkontrolovano 23 Jan 2009 },
  UPDATE  = { 2009-01-23 },
  AUTHOR =   {Navara, Mirko and Pt{\'a}k, Pavel},
  TITLE =   {Almost Boolean orthomodular posets},
  JOURNAL =   {Journal of Pure and Applied Algebra},
  ISSN = {0022-4049},
  YEAR =   {1989},
  VOLUME =   {60},
  PAGES =   {105--111},
}