@article{MP_1958_a4,
     author = {V. I. Levin},
     title = {{\CYRO} {\cyrp}{\cyro}{\cyrd}{\cyrg}{\cyro}{\cyrt}{\cyro}{\cyrv}{\cyrk}{\cyre} {\cyru}{\cyrch}{\cyri}{\cyrt}{\cyre}{\cyrl}{\cyre}{\cyrishrt} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrk}{\cyri} {\cyrv}~{\cyrp}{\cyre}{\cyrd}{\cyra}{\cyrg}{\cyro}{\cyrg}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyri}{\cyrn}{\cyrs}{\cyrt}{\cyri}{\cyrt}{\cyru}{\cyrt}{\cyra}{\cyrh}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {77--88},
     publisher = {mathdoc},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1958_a4/}
}