@article{MP_2004_a7,
     author = {R. M. Travkin},
     title = {{\CYRI}{\cyrz}{\cyro}{\cyrg}{\cyro}{\cyrn}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyre} {\cyrt}{\cyrr}{\cyre}{\cyrh}{\cyrv}{\cyra}{\cyrl}{\cyre}{\cyrn}{\cyrt}{\cyrn}{\cyrery}{\cyre} {\cyrg}{\cyrr}{\cyra}{\cyrf}{\cyrery} {\cyrn}{\cyra} {\cyrs}{\cyrf}{\cyre}{\cyrr}{\cyre}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {66--77},
     publisher = {mathdoc},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2004_a7/}
}