@article{MO_2010_a7, author = {S. A. Kuleshov and A. Salimova and S. L. Stavtsev}, title = {{\CYRL}{\cyre}{\cyrk}{\cyrc}{\cyri}{\cyri} {\cyrp}{\cyro} {\cyra}{\cyrn}{\cyra}{\cyrl}{\cyri}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyri}}, journal = {Matemati\v{c}eskoe obrazovanie}, pages = {51--63}, publisher = {mathdoc}, year = {2010}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MO_2010_a7/} }