@article{MP_1957_a18,
     author = {A. I. Markushevich},
     title = {{\CYRP}{\cyrr}{\cyra}{\cyrz}{\cyrd}{\cyrn}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyre} 250-{\cyrl}{\cyre}{\cyrt}{\cyri}{\cyrya} {\cyrs}{\cyro}~{\cyrd}{\cyrn}{\cyrya} {\cyrr}{\cyro}{\cyrzh}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyri} {{\CYREREV}{\cyrishrt}{\cyrl}{\cyre}{\cyrr}{\cyra}}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {235--240},
     publisher = {mathdoc},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_1957_a18/}
}