@article{VCHGU_2003_9_a8,
     author = {A. A. Perfil'ev},
     title = {{\CYRS}{\cyrt}{\cyre}{\cyrp}{\cyre}{\cyrn}{\cyri} {\cyro}{\cyrt}{\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrzh}{\cyre}{\cyrn}{\cyri}{\cyrishrt} {\cyrz}{\cyre}{\cyrishrt}{\cyrf}{\cyre}{\cyrr}{\cyrt}{\cyro}{\cyrv}{\cyrery}{\cyrh} {\cyrm}{\cyrn}{\cyro}{\cyrg}{\cyro}{\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrz}{\cyri}{\cyrishrt}
},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {138--144},
     publisher = {mathdoc},
     number = {9},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_2003_9_a8/}
}