@article{MP_1936_1_6_a15,
     author = {N. A. Ivanov},
     title = {{\CYRV} {\cyrt}{\cyrr}{\cyre}{\cyru}{\cyrg}{\cyro}{\cyrl}{\cyrsftsn}{\cyrn}{\cyri}{\cyrk}{\cyre} {\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyrery}{\cyrm} {\cyrb}{\cyri}{\cyrs}{\cyrs}{\cyre}{\cyrk}{\cyrt}{\cyrr}{\cyri}{\cyrs}{\cyra}{\cyrm} {\cyrs}{\cyro}{\cyro}{\cyrt}{\cyrv}{\cyre}{\cyrt}{\cyrs}{\cyrt}{\cyrv}{\cyru}{\cyryu}{\cyrt} {\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyrery}{\cyre} {\cyru}{\cyrg}{\cyrl}{\cyrery} ({\cyrr}{\cyra}{\cyrs}{\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrn}a {\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyryu} {{\CYRL}{\cyro}{\cyrb}{\cyra}{\cyrch}{\cyre}{\cyrv}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro})}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {75--77},
     year = {1936},
     volume = {Ser. 1, 6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1936_1_6_a15/}
}