@article{DAN_1971_199_1_a19,
     author = {E. Yu. Zakharova and V. B. Kudryavtsev and S. V. Yablonskii},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRO}} {\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyrery}{\cyrh} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyra}{\cyrh} {\cyrv} $k$-{\cyrz}{\cyrn}{\cyra}{\cyrch}{\cyrn}{\cyrery}{\cyrh} {\cyrl}{\cyro}{\cyrg}{\cyri}{\cyrk}{\cyra}{\cyrh}'' {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~186, {\No~3,} 1969)},
     journal = {Doklady Akademii Nauk},
     pages = {90},
     publisher = {mathdoc},
     volume = {199},
     number = {1},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_1_a19/}
}