@article{VCHGU_1999_5_a9,
     author = {V. I. Ushakov},
     title = {{\CYRP}{\cyro}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrishrt} {\cyrv}{\cyrt}{\cyro}{\cyrr}{\cyro}{\cyrishrt} {\cyrk}{\cyrr}{\cyra}{\cyre}{\cyrv}{\cyro}{\cyrishrt} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {120--125},
     year = {1999},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_1999_5_a9/}
}