@article{DE_1968_4_12_a15,
     author = {Yu. S. Bogdanov and E. A. Ivanov and A. I. Yablonskii},
     title = {{\guillemotleft}{\CYRI}{\cyrs}{\cyrt}{\cyro}{\cyrr}{\cyri}{\cyrya} {\cyro}{\cyrt}{\cyre}{\cyrch}{\cyre}{\cyrs}{\cyrt}{\cyrv}{\cyre}{\cyrn}{\cyrn}{\cyro}{\cyrishrt} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrk}{\cyri}{\guillemotright}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2290--2292},
     publisher = {mathdoc},
     volume = {4},
     number = {12},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_12_a15/}
}