@article{MO_2010_54_2_a7,
     author = {N. Gorbacheva and T. Zorina and L. N. Positselskaya},
     title = {{\CYRO} {\cyrp}{\cyrr}{\cyre}{\cyrp}{\cyro}{\cyrd}{\cyra}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyri} {\cyrerev}{\cyrl}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrt}{\cyro}{\cyrv} {\cyrt}{\cyre}{\cyro}{\cyrr}{\cyri}{\cyri} {\cyrv}{\cyre}{\cyrr}{\cyro}{\cyrya}{\cyrt}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyre}{\cyrishrt} {\cyri} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyri}{\cyrs}{\cyrt}{\cyri}{\cyrk}{\cyri} {\cyrv} {\cyrd}{\cyri}{\cyrs}{\cyrt}{\cyra}{\cyrn}{\cyrc}{\cyri}{\cyro}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyre}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {38--40},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2010_54_2_a7/}
}