@article{MP_2021_3_27_a7,
     author = {I. Kh. Sabitov},
     title = {{\CYRH}{\cyro}{\cyrr}{\cyro}{\cyrsh}{\cyro} {\cyrl}{\cyri} {\cyrm}{\cyrery} {\cyrz}{\cyrn}{\cyra}{\cyre}{\cyrm} {\cyrv}{\cyre}{\cyrk}{\cyrt}{\cyro}{\cyrr}{\cyrn}{\cyro}{\cyre} {\cyrp}{\cyrr}{\cyro}{\cyri}{\cyrz}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyre}?},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {80--98},
     year = {2021},
     volume = {Ser. 3, 27},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2021_3_27_a7/}
}