Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MI_1975__10_2_189285, author = {{\CYRV}.{\CYRM}. {\CYRZH}{\cyre}{\cyrl}{\cyrt}{\cyro}{\cyrn}{\cyro}{\cyrg}{\cyro}{\cyrv}}, title = {{\CYRO} {\cyrd}{\cyre}{\cyrl}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri} $\ensuremath{\sigma}_ u(n)$}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {106--118}, publisher = {mathdoc}, volume = {10}, number = {2}, year = {1975}, zbl = {0341.10038}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1975__10_2_189285/} }
В.М. Желтоногов. О делимости $σ_ u(n)$. Matematičeskie issledovaniâ, Tome 10 (1975) no. 2, pp. 106-118. http://geodesic.mathdoc.fr/item/MI_1975__10_2_189285/