@article{KVANT_2023_2_a7,
     author = {A. Leonovich},
     title = {{\CYRF}{\cyri}{\cyrz}{\cyri}{\cyrk}{\cyra} + {\cyrerev}{\cyrk}{\cyro}{\cyrl}{\cyro}{\cyrg}{\cyri}{\cyrya}},
     journal = {Kvant},
     pages = {32--33},
     publisher = {mathdoc},
     number = {2},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2023_2_a7/}
}