@misc{MP_2003_a19, title = {{\CYRU}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}}, journal = {Matematicheskoe Prosveshchenie}, pages = {187--189}, publisher = {mathdoc}, year = {2003}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_2003_a19/} }