@article{MP_2023_3_31_a3,
     author = {S. B. Stechkin},
     title = {{\CYRK}{\cyra}{\cyrk} {\cyrp}{\cyri}{\cyrs}{\cyra}{\cyrt}{\cyrsftsn} {\cyrr}{\cyra}{\cyrb}{\cyro}{\cyrt}{\cyrery}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {48--53},
     year = {2023},
     volume = {Ser. 3, 31},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2023_3_31_a3/}
}