Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1956__6_3_a3, author = {Schwarz, \v{S}tefan}, title = {O pologrup\'ach spl\v{n}uj\'ucich zoslaben\'e pravidl\'a kr\'atenia}, journal = {Mathematica slovaca}, pages = {149--158}, publisher = {mathdoc}, volume = {06}, number = {3}, year = {1956}, mrnumber = {0091281}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/MASLO_1956__6_3_a3/} }
Schwarz, Štefan. O pologrupách splňujúcich zoslabené pravidlá krátenia. Mathematica slovaca, Tome 06 (1956) no. 3, pp. 149-158. http://geodesic.mathdoc.fr/item/MASLO_1956__6_3_a3/