@article{KVANT_2006_4_a2, author = {A. Vasil'ev}, title = {{\CYRD}{\cyre}{\cyrn}{\cyrn}{\cyri}{\cyrs} {{\CYRG}{\cyra}{\cyrb}{\cyro}{\cyrr}}}, journal = {Kvant}, pages = {15, 23}, publisher = {mathdoc}, number = {4}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2006_4_a2/} }