@article{IVM_1992_3_a9,
     author = {A. G. Sokolskii},
     title = {$N$-{\cyrr}{\cyra}{\cyrd}{\cyri}{\cyrk}{\cyra}{\cyrl}{\cyrery} {\cyrk}{\cyro}{\cyrl}{\cyre}{\cyrc} {\cyrm}{\cyra}{\cyrt}{\cyrr}{\cyri}{\cyrc} {\cyrr}{\cyri}{\cyrs}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyro}{\cyrg}{\cyro} {\cyrt}{\cyri}{\cyrp}{\cyra}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {56--57},
     publisher = {mathdoc},
     number = {3},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_3_a9/}
}