@article{MP_2007_a11,
     author = {P. V. Bibikov and I. V. Tkachenko},
     title = {{\CYRO} {\cyrt}{\cyrr}{\cyri}{\cyrs}{\cyre}{\cyrk}{\cyrc}{\cyri}{\cyri} {\cyri} {\cyrb}{\cyri}{\cyrs}{\cyre}{\cyrk}{\cyrc}{\cyri}{\cyri} {\cyrt}{\cyrr}{\cyre}{\cyru}{\cyrg}{\cyro}{\cyrl}{\cyrsftsn}{\cyrn}{\cyri}{\cyrk}{\cyra} {\cyrn}{\cyra} {\cyrp}{\cyrl}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrs}{\cyrt}{\cyri} {{\CYRL}{\cyro}{\cyrb}{\cyra}{\cyrch}{\cyre}{\cyrv}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro}}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {113--126},
     publisher = {mathdoc},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2007_a11/}
}