@article{MP_2017_a6,
     author = {S. B. Gashkov and S. V. Kravtsev},
     title = {{\CYRN}{\cyre}{\cyrr}{\cyra}{\cyrv}{\cyre}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyra} {{\CYRS}.} {{\CYRN}.} {{\CYRB}{\cyre}{\cyrr}{\cyrn}{\cyrsh}{\cyrt}{\cyre}{\cyrishrt}{\cyrn}{\cyra}} {\cyrd}{\cyrl}{\cyrya} {\cyrt}{\cyrr}{\cyri}{\cyrg}{\cyro}{\cyrn}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyri}{\cyrh} {\cyrm}{\cyrn}{\cyro}{\cyrg}{\cyro}{\cyrch}{\cyrl}{\cyre}{\cyrn}{\cyro}{\cyrv}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {87--103},
     publisher = {mathdoc},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2017_a6/}
}