@misc{MP_1938_1_13_a12,
     title = {{\CYRR}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {60--68},
     year = {1938},
     volume = {Ser. 1, 13},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1938_1_13_a12/}
}