@article{MP_1935_1_4_a20,
     author = {A. V.},
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {129},
     year = {1935},
     volume = {Ser. 1, 4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1935_1_4_a20/}
}