@article{VCHGU_1994_2_a18,
     author = {Yu. M. Kovalev},
     title = {{\CYRP}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyre} {\cyro}{\cyrs}{\cyrr}{\cyre}{\cyrd}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrv} {\cyrm}{\cyre}{\cyrh}{\cyra}{\cyrn}{\cyri}{\cyrk}{\cyre} {\cyrg}{\cyre}{\cyrt}{\cyre}{\cyrr}{\cyro}{\cyrg}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyrr}{\cyre}{\cyrd} {\cyrs} {\cyrm}{\cyra}{\cyrl}{\cyrery}{\cyrm} {\cyro}{\cyrb}{\cyrhrdsn}{\cyre}{\cyrm}{\cyrn}{\cyrery}{\cyrm} {\cyrs}{\cyro}{\cyrd}{\cyre}{\cyrr}{\cyrzh}{\cyra}{\cyrn}{\cyri}{\cyre}{\cyrm} {\cyrk}{\cyro}{\cyrn}{\cyrd}{\cyre}{\cyrn}{\cyrs}{\cyri}{\cyrr}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrf}{\cyra}{\cyrz}},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {147--159},
     publisher = {mathdoc},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_1994_2_a18/}
}