@article{MP_1938_1_13_a9,
     author = {K. K. Billevich},
     title = {{\CYRK}{\cyru}{\cyrb}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyre} {\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyra} {\cyri} {\cyrk}{\cyru}{\cyrb}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyre} {\cyro}{\cyrb}{\cyrl}{\cyra}{\cyrs}{\cyrt}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {46--58},
     year = {1938},
     volume = {Ser. 1, 13},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1938_1_13_a9/}
}