@misc{MP_1935_1_2_a13,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {68--70},
     year = {1935},
     volume = {Ser. 1, 2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1935_1_2_a13/}
}