@article{MS_1987__174_3_a2,
     author = {{\CYRP}.{\CYRG}. {\CYRZ}{\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrf} and {\CYRL}.{\CYRA}. {\CYRT}{\cyra}{\cyrh}{\cyrt}{\cyra}{\cyrd}{\cyrzh}{\cyrya}{\cyrn}},
     title = {{\CYRO}{\cyrb} {\cyru}{\cyrn}{\cyri}{\cyrf}{\cyro}{\cyrr}{\cyrm}{\cyri}{\cyrz}{\cyra}{\cyrc}{\cyri}{\cyri} {\cyrr}{\cyri}{\cyrm}{\cyra}{\cyrn}{\cyro}{\cyrv}{\cyrery}{\cyrh} {\cyrp}{\cyro}{\cyrv}{\cyre}{\cyrr}{\cyrh}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyre}{\cyrishrt} {\cyri} {\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrk}{\cyre} {{\CYRV}{\cyre}{\cyrishrt}{\cyrl}{\cyrya}-{\CYRP}{\cyre}{\cyrt}{\cyre}{\cyrr}{\cyrs}{\cyro}{\cyrn}{\cyra}} {\cyrn}{\cyra} {\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyra}{\cyrh} {{\CYRT}{\cyre}{\cyrishrt}{\cyrh}{\cyrm}{\cyryu}{\cyrl}{\cyrl}{\cyre}{\cyrr}{\cyra}} {\cyri} {{\CYRSH}{\cyro}{\cyrt}{\cyrt}{\cyrk}{\cyri}}},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {304--321},
     publisher = {mathdoc},
     volume = {174},
     number = {3},
     year = {1987},
     zbl = {0642.32011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1987__174_3_a2/}
}