@article{MASLO_2000__50_4_a1,
     author = {B\v{e}lohl\'avek, Radim},
     title = {A characterization of congruence classes of quasigroups},
     journal = {Mathematica slovaca},
     pages = {377--380},
     publisher = {mathdoc},
     volume = {50},
     number = {4},
     year = {2000},
     mrnumber = {1857296},
     zbl = {0988.08001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2000__50_4_a1/}
}