@article{MS_1987__174_3_a1,
     author = {{\CYRA}.{\CYRA}. {\CYRG}{\cyro}{\cyrn}{\cyrch}{\cyra}{\cyrr} and {\CYRL}.{\CYRD}. {\CYRG}{\cyrr}{\cyri}{\cyrg}{\cyro}{\cyrr}{\cyrya}{\cyrn}},
     title = {{\CYRO}{\cyrb} {\cyro}{\cyrc}{\cyre}{\cyrn}{\cyrk}{\cyre} {\cyrk}{\cyro}{\cyrm}{\cyrp}{\cyro}{\cyrn}{\cyre}{\cyrn}{\cyrt} {\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrn}{\cyri}{\cyrch}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyra}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt}},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {299--303},
     publisher = {mathdoc},
     volume = {174},
     number = {3},
     year = {1987},
     zbl = {0617.30031},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1987__174_3_a1/}
}