@misc{KVANT_2021_5_a16,
     title = {{\CYRK} {{\guillemotleft}{\CYRK}{\cyra}{\cyrl}{\cyre}{\cyrishrt}{\cyrd}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrp}{\cyru}} {{\guillemotleft}{\CYRK}{\cyrv}{\cyra}{\cyrn}{\cyrt}{\cyra}{\guillemotright}}},
     journal = {Kvant},
     pages = {46},
     publisher = {mathdoc},
     number = {5},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2021_5_a16/}
}