@article{DAN_1978_243_4_a25,
     author = {I. V. Petrova and L. N. Kaplunnik and N. S. Bortnikov and E. A. Pobedimskaya and N. V. Belov},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRK}{\cyrr}{\cyri}{\cyrs}{\cyrt}{\cyra}{\cyrl}{\cyrl}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyra}{\cyrya}} {\cyrs}{\cyrt}{\cyrr}{\cyru}{\cyrk}{\cyrt}{\cyru}{\cyrr}{\cyra} {\cyrs}{\cyri}{\cyrn}{\cyrt}{\cyre}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyrr}{\cyro}{\cyrb}{\cyri}{\cyrn}{\cyrs}{\cyro}{\cyrn}{\cyri}{\cyrt}{\cyra}'' {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~241, {\No~1,} 1978~{\cyrg}.)},
     journal = {Doklady Akademii Nauk},
     pages = {824},
     publisher = {mathdoc},
     volume = {243},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_4_a25/}
}