@article{MP_1959_a20,
     author = {M. B. Balk},
     title = {{\CYRV}{\cyrery}{\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrs}{\cyru}{\cyrm}{\cyrm} {\cyrs}~{\cyrp}{\cyro}{\cyrm}{\cyro}{\cyrshch}{\cyrsftsn}{\cyryu} {\cyrv}{\cyrz}{\cyrv}{\cyre}{\cyrsh}{\cyri}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyrya}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {205--207},
     publisher = {mathdoc},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1959_a20/}
}