@misc{KVANT_2020_8_a9,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2614{\textendash}{\CYRM}2617,} {{\CYRF}2621{\textendash}{\CYRF}2624}},
     journal = {Kvant},
     pages = {19--20},
     year = {2020},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2020_8_a9/}
}