@article{10_4064_cm_21_2_253_263,
     author = {{\CYRV}. {\CYRG}. {\CYRB}{\cyro}{\cyrl}{\cyrt}{\cyrya}{\cyrn}{\cyrs}{\cyrk}{\cyrishrt}},
     title = {O p{\cyra}{\cyrz}{\cyri}{\cyre}{\cyrn}{\cyri} {\cyrp}{\cyrl}{\cyro}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrf}{\cyri}{\cyrg}{\cyru}{\cyrr} {\cyrn}{\cyra} {\cyrch}{\cyra}{\cyrs}{\cyrt}{\cyri} {\cyrm}{\cyre}{\cyrn}{\cyrsftsn}{\cyrsh}{\cyre}{\cyrg}{\cyro} {\cyrd}{\cyri}{\cyra}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyra}},
     journal = {Colloquium Mathematicum},
     pages = {253--263},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1970},
     doi = {10.4064/cm-21-2-253-263},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-253-263/}
}