@article{KVANT_2020_2_a6,
     author = {D. Prokopenko and D. Shvetsov},
     title = {{\CYRV}{\cyro}{\cyrk}{\cyrr}{\cyru}{\cyrg} {\cyrt}{\cyro}{\cyrch}{\cyrk}{\cyri} {\cyrn}{\cyra} {\cyrm}{\cyre}{\cyrd}{\cyri}{\cyra}{\cyrn}{\cyre}},
     journal = {Kvant},
     pages = {42--46},
     publisher = {mathdoc},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2020_2_a6/}
}