%0 Journal Article %A V. A. Kobyshev %A B. I. Shakhtarin %T Investigation of a nonlinear system %J Differencialʹnye uravneniâ %D 1966 %P 1132-1133 %V 2 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1966_2_8_a15/ %G ru %F DE_1966_2_8_a15