@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} {``{\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}'' {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~236, {\No~3,} 1977~{\cyrg}.)}, journal = {Doklady Akademii Nauk}, pages = {1272}, publisher = {mathdoc}, volume = {240}, number = {6}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_6_a20/} }