@misc{KVANT_2021_6_a15,
     title = {{\guillemotleft}{\CYRK}{\cyrv}{\cyra}{\cyrn}{\cyrt}{\guillemotright} {\cyrd}{\cyrl}{\cyrya} {\cyrm}{\cyrl}{\cyra}{\cyrd}{\cyrsh}{\cyri}{\cyrh} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyrsftsn}{\cyrn}{\cyri}{\cyrk}{\cyro}{\cyrv}},
     journal = {Kvant},
     pages = {56--57},
     publisher = {mathdoc},
     number = {6},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2021_6_a15/}
}