@article{VCHGU_1999_4_a9,
     author = {N. P. Krushina and N. B. Medvedeva},
     title = {{\CYRA}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyra}{\cyrya} {\cyrr}{\cyra}{\cyrz}{\cyrr}{\cyre}{\cyrsh}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn}},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {102--115},
     year = {1999},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_1999_4_a9/}
}