@article{10_4064_sm_31_1_89_94,
     author = {{\CYRM}. {\CYRK}{\cyra}{\cyrd}{\cyre}{\cyrc}},
     title = {{\CYRM}{\cyre}{\cyrt}{\cyro}{\cyrd} {\cyrerev}{\cyrk}{\cyrv}{\cyri}{\cyrv}{\cyra}{\cyrl}{\cyre}{\cyrn}{\cyrt}{\cyrn}{\cyrery}{\cyrh} {\cyrn}{\cyro}{\cyrr}{\cyrm} {\cyrv} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyri}{\cyri} {\cyra}{\cyrb}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrk}{\cyrt}{\cyrn}{\cyrery}{\cyrh} {\cyrp}{\cyro}{\cyrch}{\cyrt}{\cyri} {\cyrp}{\cyre}{\cyrr}{\cyri}{\cyro}{\cyrd}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt}},
     journal = {Studia Mathematica},
     pages = {89--94},
     year = {1968},
     volume = {31},
     number = {1},
     doi = {10.4064/sm-31-1-89-94},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-31-1-89-94/}
}