@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/}
}