@article{MP_1959_a23,
     author = {I. N. Sapgir},
     title = {{\CYRD}{\cyrv}{\cyra} {\cyrp}{\cyrr}{\cyri}{\cyrz}{\cyrn}{\cyra}{\cyrk}{\cyra} {\cyrd}{\cyre}{\cyrl}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrn}{\cyra} {\cyrl}{\cyryu}{\cyrb}{\cyro}{\cyre} {\cyrn}{\cyre}{\cyrch}{\cyre}{\cyrt}{\cyrn}{\cyro}{\cyre} {\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyro}, {\cyrn}{\cyre} {\cyro}{\cyrk}{\cyra}{\cyrn}{\cyrch}{\cyri}{\cyrv}{\cyra}{\cyryu}{\cyrshch}{\cyre}{\cyre}{\cyrs}{\cyrya} {\cyrn}{\cyra}~5},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {209--211},
     publisher = {mathdoc},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1959_a23/}
}