Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1959__9_3_a4, author = {Hrmov\'a, Ren\'ata}, title = {O ekvivalencii ist\'ych pravidiel kr\'atenia v pologrup\'ach}, journal = {Mathematica slovaca}, pages = {177--182}, publisher = {mathdoc}, volume = {09}, number = {3}, year = {1959}, mrnumber = {0131478}, zbl = {0132.01002}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/MASLO_1959__9_3_a4/} }
Hrmová, Renáta. O ekvivalencii istých pravidiel krátenia v pologrupách. Mathematica slovaca, Tome 09 (1959) no. 3, pp. 177-182. http://geodesic.mathdoc.fr/item/MASLO_1959__9_3_a4/