@misc{KVANT_2021_1_a8,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2634--{\CYRM}2637,} {{\CYRF}2641--{\CYRF}2644}},
     journal = {Kvant},
     pages = {23--25},
     publisher = {mathdoc},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2021_1_a8/}
}