@article{KVANT_2023_5_a5,
     author = {A. Leonovich},
     title = {{\CYRF}{\cyri}{\cyrz}{\cyri}{\cyrk}{\cyra} + {\cyrs}{\cyrp}{\cyro}{\cyrr}{\cyrt}},
     journal = {Kvant},
     pages = {32--33},
     publisher = {mathdoc},
     number = {5},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2023_5_a5/}
}