@article{DAN_1978_240_6_a20,
     author = {G. M. Polotovsky},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {{\textquotedblleft}{\CYRK}{\cyra}{\cyrt}{\cyra}{\cyrl}{\cyro}{\cyrg}} $M$-{\cyrr}{\cyra}{\cyrs}{\cyrp}{\cyra}{\cyrd}{\cyra}{\cyryu}{\cyrshch}{\cyri}{\cyrh}{\cyrs}{\cyrya} {\cyrk}{\cyrr}{\cyri}{\cyrv}{\cyrery}{\cyrh} $6$-{\cyrg}{\cyro} {\cyrp}{\cyro}{\cyrr}{\cyrya}{\cyrd}{\cyrk}{\cyra}{\textquotedblright} {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~236, ~3, 1977~{\cyrg}.)},
     journal = {Doklady Akademii Nauk},
     pages = {1272},
     year = {1978},
     volume = {240},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_6_a20/}
}