@article{10_4064_ap_52_1_103_108,
     author = {{\CYRN}{\cyrg}{\cyru}{\cyre}{\cyrn} {\CYRV}{\cyra}{\cyrn} {\CYRM}{\cyra}{\cyru}},
     title = {{\CYRO} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyrery} {\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyri}{\cyrn}{\cyrg}{\cyru}{\cyrl}{\cyrya}{\cyrr}{\cyrn}{\cyrery}{\cyrh} {\cyri}{\cyrn}{\cyrt}{\cyre}{\cyrg}{\cyrr}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrishrt} {\cyrs} {\cyra}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrm}{\cyri} {\cyrya}{\cyrd}{\cyrr}{\cyra}{\cyrm}{\cyri} {\cyri} {\cyro}{\cyrt}{\cyrr}{\cyra}{\cyrzh}{\cyre}{\cyrn}{\cyri}{\cyre}{\cyrm}},
     journal = {Annales Polonici Mathematici},
     pages = {103--108},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {1990},
     doi = {10.4064/ap-52-1-103-108},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-52-1-103-108/}
}