@Article{Mayet-Ptak-AU1999,
  IS =     { zkontrolovano 29 Dec 00 },
  author =   { Mayet, R. and Ptak, P. },
  title =   { Quasivarieties of Orthomodular Lattices Determined
                  by Conditions on States },
  year =   { 1999 },
  month =   { },
  pages =   { 155--164 },
  journal =   { Algebra Universalis },
  publisher =   { Birkh{\"a}userr Verlag },
  address =   { Basel, Switzerland },
  issn =   { 0002-5240 },
  volume =   { 42 },
  number =   { 3 },
  authorship =   { 50-50 },
  annote =   { },
  keywords =   { },
  project =   { VS96049, GACR 201/96/0117 },
}