@article{KVANT_2023_2_a0, author = {A. Panov and D. Panov and P. Panov}, title = {{\CYRF}{\cyrr}{\cyri}{\cyrz}{\cyrery}}, journal = {Kvant}, pages = {2--11}, year = {2023}, number = {2}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2023_2_a0/} }