@article{VCHGU_1991_1_a12,
     author = {V. P. Tanana and T. N. Rudakova},
     title = {{\CYRO}{\cyrb} {\cyro}{\cyrc}{\cyre}{\cyrn}{\cyrk}{\cyre} {\cyrp}{\cyro}{\cyrg}{\cyrr}{\cyre}{\cyrsh}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyro}{\cyrp}{\cyrt}{\cyri}{\cyrm}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrm}{\cyre}{\cyrt}{\cyro}{\cyrd}{\cyra} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrn}{\cyre}{\cyrk}{\cyro}{\cyrr}{\cyrr}{\cyre}{\cyrk}{\cyrt}{\cyrn}{\cyrery}{\cyrh} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch} {\cyrv} {\cyrg}{\cyri}{\cyrl}{\cyrsftsn}{\cyrb}{\cyre}{\cyrr}{\cyrt}{\cyro}{\cyrv}{\cyrery}{\cyrh} {\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyra}{\cyrh} {\cyrp}{\cyrr}{\cyri} {\cyrd}{\cyro}{\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyri}{\cyrt}{\cyre}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrn}{\cyri}{\cyrch}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrh} {\cyrn}{\cyra} {\cyrp}{\cyro}{\cyrg}{\cyrr}{\cyre}{\cyrsh}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyra}},
     journal = {Vestnik Chelyabinskogo Gosudarstvennogo Universiteta. Matematika, Mekhanika, Informatika},
     pages = {108--112},
     publisher = {mathdoc},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VCHGU_1991_1_a12/}
}