@article{MS_1990__181_4_a6,
     author = {{\CYRV}.{\CYRV}. {\CYRN}{\cyra}{\cyrp}{\cyra}{\cyrl}{\cyrk}{\cyro}{\cyrv} and {\CYRA}.{\CYRV}. {\CYRK}{\cyro}{\cyrm}{\cyra}{\cyrr}{\cyro}{\cyrv}},
     title = {{\CYRO} {\cyrr}{\cyra}{\cyrz}{\cyrl}{\cyro}{\cyrzh}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyra}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt} {\cyrv} {\cyrr}{\cyrya}{\cyrd} {\cyrp}{\cyro} {\cyrerev}{\cyrl}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrt}{\cyra}{\cyrr}{\cyrn}{\cyrery}{\cyrm} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrm} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrs}{\cyrv}{\cyre}{\cyrr}{\cyrt}{\cyrk}{\cyri}},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {556--563},
     publisher = {mathdoc},
     volume = {181},
     number = {4},
     year = {1990},
     zbl = {0697.30027},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1990__181_4_a6/}
}