@article{MP_2021_a14,
     author = {B. R. Frenkin},
     title = {{\CYRS}{\cyrv}{\cyrya}{\cyrz}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrg}{\cyrr}{\cyra}{\cyrf}{\cyra} {\cyrk}{\cyra}{\cyrk} {\cyrt}{\cyro}{\cyrp}{\cyro}{\cyrl}{\cyro}{\cyrg}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyra}{\cyrya} {\cyrs}{\cyrv}{\cyrya}{\cyrz}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {213--215},
     publisher = {mathdoc},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2021_a14/}
}