@article{MP_1937_1_10_a10,
     author = {S. S. Byushgens},
     title = {{\CYRO} {\cyrk}{\cyra}{\cyrch}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrk}{\cyrr}{\cyri}{\cyrv}{\cyro}{\cyrishrt}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {40--47},
     year = {1937},
     volume = {Ser. 1, 10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1937_1_10_a10/}
}