@article{AUPO_2004__43_1_a6,
     author = {Chajda, Ivan and Dorfer, Gerhard and L\"anger, Helmut},
     title = {Local versions of some congruence properties in single algebras},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {65--73},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {2004},
     mrnumber = {2124604},
     zbl = {1077.08002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_2004__43_1_a6/}
}