@article{DAN_1989_304_3_a23,
     author = {G. A. Askar'yan and G. M. Batanov and I. A. Kossyi and A. Yu. Kostinskii},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {{\textquotedblleft}{\CYRP}{\cyro}{\cyrs}{\cyrl}{\cyre}{\cyrd}{\cyrs}{\cyrt}{\cyrv}{\cyri}{\cyrya}} {{\CYRS}{\CYRV}{\CYRCH}-{\cyrr}{\cyra}{\cyrz}{\cyrr}{\cyrya}{\cyrd}{\cyro}{\cyrv}} {\cyrv} {\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrs}{\cyrf}{\cyre}{\cyrr}{\cyre}{\textquotedblright} {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~302, ~3, {\cyrs}{\cyrt}{\cyrr}. 566{\textendash}570)},
     journal = {Doklady Akademii Nauk},
     pages = {520},
     year = {1989},
     volume = {304},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_3_a23/}
}