Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1981__31_4_a5, author = {Schwarz, \v{S}tefan}, title = {The role of semigroups in the elementary theory of numbers}, journal = {Mathematica slovaca}, pages = {369--395}, publisher = {mathdoc}, volume = {31}, number = {4}, year = {1981}, mrnumber = {637966}, zbl = {0474.10002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1981__31_4_a5/} }
Schwarz, Štefan. The role of semigroups in the elementary theory of numbers. Mathematica slovaca, Tome 31 (1981) no. 4, pp. 369-395. http://geodesic.mathdoc.fr/item/MASLO_1981__31_4_a5/