@article{DAN_1976_227_4_a18,
     author = {I. V. Velbitskii},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRN}{\cyro}{\cyrr}{\cyrm}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyre}} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrn}{\cyri}{\cyre} {\cyrs}{\cyre}{\cyrm}{\cyra}{\cyrn}{\cyrt}{\cyri}{\cyrk} {\cyrya}{\cyrz}{\cyrery}{\cyrk}{\cyro}{\cyrv} {\cyrs}{\cyro}{\cyrv}{\cyrr}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm} {\cyrp}{\cyrr}{\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrm}{\cyrm}{\cyri}{\cyrr}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyrya}'' {({\CYRD}{\CYRA}{\CYRN},} {\cyrt}.~223, {\No~{\cyrb},} 1975~{\cyrg}.)},
     journal = {Doklady Akademii Nauk},
     pages = {776},
     publisher = {mathdoc},
     volume = {227},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_227_4_a18/}
}