@article{MI_1990__117_190112,
     author = {{\CYRV}.{\CYRI}. {\CYRP}{\cyra}{\cyrc}{\cyryu}{\cyrk} and {\CYRG}.{\CYRI}. {\CYRR}{\cyro}{\cyrb}{\cyru}{\cyrl}},
     title = {{\CYRCH}{\cyri}{\cyrs}{\cyrl}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyre} {\cyri}{\cyrs}{\cyrs}{\cyrl}{\cyre}{\cyrd}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyre} {\cyrp}{\cyro}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyro}{\cyrb}{\cyro}{\cyrl}{\cyro}{\cyrch}{\cyre}{\cyrch}{\cyrn}{\cyro}{\cyrishrt} {\cyrk}{\cyro}{\cyrn}{\cyrs}{\cyrt}{\cyrr}{\cyru}{\cyrk}{\cyrc}{\cyri}{\cyri} {\cyrs} {\cyrz}{\cyra}{\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyri}{\cyrt}{\cyre}{\cyrl}{\cyre}{\cyrm} {\cyrp}{\cyro}{\cyrd} {\cyrd}{\cyre}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyri}{\cyre}{\cyrm} {\cyrn}{\cyra}{\cyrb}{\cyre}{\cyrg}{\cyra}{\cyryu}{\cyrshch}{\cyre}{\cyrishrt} {\cyru}{\cyrd}{\cyra}{\cyrr}{\cyrn}{\cyro}{\cyrishrt} {\cyrv}{\cyro}{\cyrl}{\cyrn}{\cyrery}},
     journal = {Matemati\v{c}eskie issledovani\^a},
     pages = {108--112},
     publisher = {mathdoc},
     volume = {117},
     year = {1990},
     zbl = {0736.73070},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MI_1990__117_190112/}
}