@article{AUPO_1993_32_1_a2,
     author = {Chajda, Ivan},
     title = {Subdirectly irreducible algebras of quasiordered logics},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {21--26},
     year = {1993},
     volume = {32},
     number = {1},
     mrnumber = {1273165},
     zbl = {0799.06026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1993_32_1_a2/}
}