@misc{KVANT_2017_5_a6,
     title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}},
     journal = {Kvant},
     pages = {21},
     year = {2017},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2017_5_a6/}
}