@ARTICLE{HamhalterNavaraPtakIJTP95,
  IS = { zkontrolovano 23 Jan 2009 },
  UPDATE  = { 2009-01-23 },
  AUTHOR =   {Navara, Mirko and Hamhalter, Jan and Pt{\'a}k, Pavel},
  TITLE =   {States on orthoalgebras},
  JOURNAL =   {International Journal of Theoretical Physics},
  ISSN = {0020-7748},
  YEAR =   {1995},
  VOLUME =   {34},
  PAGES =   {1439--1465},
}