@article{DAN_1970_193_6_a22,
     author = {E. E. Berlovich and Yu. N. Novikov},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRO}} {\cyrv}{\cyre}{\cyrr}{\cyro}{\cyrya}{\cyrt}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri} {\cyrd}{\cyrv}{\cyro}{\cyrishrt}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrb}{\cyre}{\cyrt}{\cyra}-{\cyrr}{\cyra}{\cyrs}{\cyrp}{\cyra}{\cyrd}{\cyra} {\cyrya}{\cyrd}{\cyre}{\cyrr} {\cyrv} {\cyro}{\cyrb}{\cyrl}{\cyra}{\cyrs}{\cyrt}{\cyrya}{\cyrh}, {\cyru}{\cyrd}{\cyra}{\cyrl}{\cyre}{\cyrn}{\cyrn}{\cyrery}{\cyrh} {\cyro}{\cyrt} {\cyrp}{\cyro}{\cyrl}{\cyro}{\cyrs}{\cyrery} {\cyrb}{\cyre}{\cyrt}{\cyra}-{\cyrs}{\cyrt}{\cyra}{\cyrb}{\cyri}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyri}'' 
},
     journal = {Doklady Akademii Nauk},
     pages = {742},
     publisher = {mathdoc},
     volume = {193},
     number = {6},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_6_a22/}
}