@article{MI_1981__64_189621,
     author = {B.A. {\CYRG}{\cyro}{\cyrr}{\cyrd}{\cyro}{\cyrn} and B.B. {\CYRM}{\cyra}{\cyrzh}{\cyre}{\cyrr}{\cyru}},
     title = {{\CYRP}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyra} {\cyrf}{\cyra}{\cyrz}{\cyro}{\cyrv}{\cyrery}{\cyrh} {\cyri}{\cyrn}{\cyrt}{\cyre}{\cyrg}{\cyrr}{\cyra}{\cyrl}{\cyro}{\cyrv} {\cyrk} {\cyrr}{\cyra}{\cyrs}{\cyrch}{\cyre}{\cyrt}{\cyru} {\cyrk}{\cyrr}{\cyru}{\cyrg}{\cyrl}{\cyrery}{\cyrh} {\cyrp}{\cyrl}{\cyra}{\cyrs}{\cyrt}{\cyri}{\cyrn} {\cyrp}{\cyre}{\cyrr}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrzh}{\cyre}{\cyrs}{\cyrt}{\cyrk}{\cyro}{\cyrs}{\cyrt}{\cyri}},
     journal = {Matemati\v{c}eskie issledovani\^a},
     pages = {46--49},
     publisher = {mathdoc},
     volume = {64},
     year = {1981},
     zbl = {0487.73060},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MI_1981__64_189621/}
}