@article{MT_2021_24_1_a1,
     author = {A. M. Blokhin and D. L. Tkachev},
     title = {{\CYRL}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyra}{\cyrya} {\cyrn}{\cyre}{\cyru}{\cyrs}{\cyrt}{\cyro}{\cyrishrt}{\cyrch}{\cyri}{\cyrv}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrs}{\cyro}{\cyrs}{\cyrt}{\cyro}{\cyrya}{\cyrn}{\cyri}{\cyrya} {\cyrp}{\cyro}{\cyrk}{\cyro}{\cyrya} {\cyrd}{\cyrl}{\cyrya} {{\CYRM}{\CYRG}{\CYRD}} {\cyrm}{\cyro}{\cyrd}{\cyre}{\cyrl}{\cyri} {\cyrn}{\cyre}{\cyrs}{\cyrzh}{\cyri}{\cyrm}{\cyra}{\cyre}{\cyrm}{\cyro}{\cyrishrt} {\cyrp}{\cyro}{\cyrl}{\cyri}{\cyrm}{\cyre}{\cyrr}{\cyrn}{\cyro}{\cyrishrt} {\cyrzh}{\cyri}{\cyrd}{\cyrk}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrv} {\cyrs}{\cyrl}{\cyru}{\cyrch}{\cyra}{\cyre} {\cyra}{\cyrb}{\cyrs}{\cyro}{\cyrl}{\cyryu}{\cyrt}{\cyrn}{\cyro}{\cyrishrt} {\cyrp}{\cyrr}{\cyro}{\cyrv}{\cyro}{\cyrd}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyri}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {35--51},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2021_24_1_a1/}
}