@article{10_21136_CMJ_1956_100198,
     author = {Sobolev, Serge\u{i} L.},
     title = {{\CYRN}{\cyre}{\cyrk}{\cyro}{\cyrt}{\cyro}{\cyrr}{\cyrery}{\cyre} {\cyrs}{\cyro}{\cyrv}{\cyre}{\cyrt}{\cyrs}{\cyrk}{\cyri}{\cyre} {\cyrr}{\cyra}{\cyrb}{\cyro}{\cyrt}{\cyrery} {\cyrp}{\cyro} {\cyrp}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyryu} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyro}{\cyrn}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyra}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrz}{\cyra} {\cyrk} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrm} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrm}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {289--310},
     publisher = {mathdoc},
     volume = {06},
     number = {3},
     year = {1956},
     doi = {10.21136/CMJ.1956.100198},
     mrnumber = {0088640},
     zbl = {0075.08404},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1956.100198/}
}