@article{MP_1957_2_1_a31,
     author = {G. B. Gurevich},
     title = {{\CYRU}{\cyrch}{\cyre}{\cyrb}{\cyrn}{\cyri}{\cyrk} {\cyra}{\cyrl}{\cyrg}{\cyre}{\cyrb}{\cyrr}{\cyrery} {{\CYRV}.} {{\CYRL}.~{\CYRG}{\cyro}{\cyrn}{\cyrch}{\cyra}{\cyrr}{\cyro}{\cyrv}{\cyra}}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {243--250},
     year = {1957},
     volume = {Ser. 2, 1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_2_1_a31/}
}