@article{MP_1938_1_13_a15,
     author = {L. Lyutin},
     title = {{\CYRD}.{\CYRS}. {{\CYRB}{\cyre}{\cyrr}{\cyre}{\cyrz}{\cyra}{\cyrn}{\cyrs}{\cyrk}{\cyra}{\cyrya}.} {{\CYRM}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyri}{\cyrk}{\cyra}} {\cyra}{\cyrr}{\cyri}{\cyrf}{\cyrm}{\cyre}{\cyrt}{\cyri}{\cyrk}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {72--74},
     year = {1938},
     volume = {Ser. 1, 13},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1938_1_13_a15/}
}