@article{MP_2021_a4,
     author = {D. Schleicher},
     title = {{\CYRI}{\cyrn}{\cyrt}{\cyre}{\cyrr}{\cyrv}{\cyrsftsn}{\cyryu} {\cyrs} {{\CYRD}{\cyrzh}{\cyro}{\cyrn}{\cyro}{\cyrm}} {{\CYRH}{\cyro}{\cyrr}{\cyrt}{\cyro}{\cyrn}{\cyro}{\cyrm}} {{\CYRK}{\cyro}{\cyrn}{\cyrv}{\cyre}{\cyre}{\cyrm}}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {69--87},
     publisher = {mathdoc},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2021_a4/}
}