@ARTICLE{MayetPtakQuasi,
  MYNOTE =   { S1997 },
  Html =   { MayetPtakQuasi },
  AUTHOR =   {Mayet, R. and Pt{\'a}k, P.},
  TITLE =   {Quasivarieties of orthomodular lattices determined
                  by conditions on states},
  NOTE =   {Submitted},
  WHO =     {Navara},
}