@misc{MP_1959_2_4_a30,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {243--252},
     year = {1959},
     volume = {Ser. 2, 4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1959_2_4_a30/}
}