@article{DE_1994_30_3_a26,
     author = {V. A. Il'in and S. A. Lomov and M. S. Nikol'skii and Yu. V. Pokornyi},
     title = {{\guillemotleft}{\CYRP}{\cyro}{\cyrn}{\cyrt}{\cyrr}{\cyrya}{\cyrg}{\cyri}{\cyrn}{\cyrs}{\cyrk}{\cyri}{\cyre} {{\cyrch}{\cyrt}{\cyre}{\cyrn}{\cyri}{\cyrya}-IV{\guillemotright}} {\cyrn}{\cyra} {\cyrv}{\cyre}{\cyrs}{\cyre}{\cyrn}{\cyrn}{\cyre}{\cyrishrt} {{\CYRV}{\cyro}{\cyrr}{\cyro}{\cyrn}{\cyre}{\cyrzh}{\cyrs}{\cyrk}{\cyro}{\cyrishrt}} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyrsh}{\cyrk}{\cyro}{\cyrl}{\cyre}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {538--539},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_3_a26/}
}