@article{KVANT_2022_5_a1,
     author = {K. Kokhas'},
     title = {{\CYRI}{\cyrg}{\cyrr}{\cyra} {\cyrv} 15},
     journal = {Kvant},
     pages = {14--20},
     publisher = {mathdoc},
     number = {5},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2022_5_a1/}
}