Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_118_5_a0, author = {B. M. Bredikhin}, title = {Free numerical semigroups with power densities}, journal = {Doklady Akademii Nauk}, pages = {855--857}, publisher = {mathdoc}, volume = {118}, number = {5}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_118_5_a0/} }
B. M. Bredikhin. Free numerical semigroups with power densities. Doklady Akademii Nauk, Tome 118 (1958) no. 5, pp. 855-857. http://geodesic.mathdoc.fr/item/DAN_1958_118_5_a0/