@misc{KVANT_2020_9_a6,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2618{\textendash}{\CYRM}2621,} {{\CYRF}2625{\textendash}{\CYRF}2628}},
     journal = {Kvant},
     pages = {20--21},
     year = {2020},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2020_9_a6/}
}