@article{MS_1975__140_4_a6,
     author = {{\CYRV}.{\CYRG}. {\CYRM}{\cyri}{\cyrh}{\cyra}{\cyrishrt}{\cyrl}{\cyro}{\cyrv}},
     title = {{\CYRC}{\cyre}{\cyrn}{\cyrt}{\cyrr}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyra}{\cyrya} {\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyre}{\cyrl}{\cyrsftsn}{\cyrn}{\cyra}{\cyrya} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyre}{\cyrm}{\cyra} {\cyrd}{\cyrl}{\cyrya} {\cyrn}{\cyre}{\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrr}{\cyro}{\cyrd}{\cyrn}{\cyrery}{\cyrh} $U$-{\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyri}{\cyrs}{\cyrt}{\cyri}{\cyrk} {\cyro}{\cyrt} {\cyrk}{\cyro}{\cyrn}{\cyre}{\cyrch}{\cyrn}{\cyro} {\cyrz}{\cyra}{\cyrv}{\cyri}{\cyrs}{\cyri}{\cyrm}{\cyrery}{\cyrh} {\cyrs}{\cyrl}{\cyru}{\cyrch}{\cyra}{\cyrishrt}{\cyrn}{\cyrery}{\cyrh} {\cyrv}{\cyre}{\cyrl}{\cyri}{\cyrch}{\cyri}{\cyrn}},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {624--634},
     publisher = {mathdoc},
     volume = {140},
     number = {4},
     year = {1975},
     zbl = {0334.62008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1975__140_4_a6/}
}