@article{MP_2023_3_31_a12,
     author = {A. Ya. Kanel-Belov and I. V. Mitrofanov},
     title = {{\CYRO}{\cyrb} {\cyrerev}{\cyrl}{\cyre}{\cyrk}{\cyrt}{\cyrr}{\cyro}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrp}{\cyru}{\cyrb}{\cyrl}{\cyri}{\cyrk}{\cyra}{\cyrc}{\cyri}{\cyrya}{\cyrh} {\cyrp}{\cyro} {\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {230},
     year = {2023},
     volume = {Ser. 3, 31},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2023_3_31_a12/}
}