@article{MP_2012_a6, author = {M. N. Vyalyi and V. A. Gurvich}, title = {{\CYRU}{\cyrl}{\cyrsftsn}{\cyrt}{\cyrr}{\cyra}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrk}{\cyri}, {\cyrd}{\cyre}{\cyrr}{\cyre}{\cyrv}{\cyrsftsn}{\cyrya}, {\cyrp}{\cyro}{\cyrt}{\cyro}{\cyrk}{\cyri} {\cyri} {\cyru}{\cyrz}{\cyrk}{\cyri}{\cyre} {\cyrm}{\cyre}{\cyrs}{\cyrt}{\cyra}}, journal = {Matematicheskoe Prosveshchenie}, pages = {75--88}, publisher = {mathdoc}, year = {2012}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_2012_a6/} }