@misc{MP_1961_2_6_a28,
     title = {{\CYRO}{\cyrt} {\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {265},
     year = {1961},
     volume = {Ser. 2, 6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1961_2_6_a28/}
}