@article{MP_2020_3_26_a12,
     author = {S. B. Gashkov},
     title = {{\CYRZ}{\cyra}{\cyrm}{\cyre}{\cyrch}{\cyra}{\cyrn}{\cyri}{\cyrya} {\cyrk} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyrn}{\cyri}{\cyrk}{\cyru}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {259--262},
     year = {2020},
     volume = {Ser. 3, 26},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2020_3_26_a12/}
}