Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@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/} }
Bělohlávek, Radim. A characterization of congruence classes of quasigroups. Mathematica slovaca, Tome 50 (2000) no. 4, pp. 377-380. http://geodesic.mathdoc.fr/item/MASLO_2000__50_4_a1/