@article{10_4064_am_17_1_143_148,
     author = {{\CYRISHRT}. {\CYRK}{\cyra}{\cyrch}{\cyrm}{\cyra}{\cyrr}{\cyrch}{\cyri}{\cyrk}},
     title = {O {\cyrp}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyra} {\cyrp}{\cyrr}{\cyro}{\cyrg}{\cyro}{\cyrn}{\cyrk}{\cyri} {\cyrk} {\cyrn}{\cyra}{\cyrh}{\cyro}{\cyrzh}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyryu} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrishrt} {\cyra}{\cyrl}{\cyrg}{\cyre}{\cyrb}{\cyrr}{\cyra}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyrery} {\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyrery}{\cyrh} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrishrt}},
     journal = {Applicationes Mathematicae},
     pages = {143--148},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1980},
     doi = {10.4064/am-17-1-143-148},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-17-1-143-148/}
}