@misc{MP_2010_3_14_a19, title = {{\CYRU}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}}, journal = {Matematicheskoe Prosveshchenie}, pages = {270--274}, year = {2010}, volume = {Ser. 3, 14}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_2010_3_14_a19/} }