@misc{MP_1961_a39,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {329--336},
     publisher = {mathdoc},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1961_a39/}
}