%0 Journal Article %A V. G. Shironosov %T Stability of unstable states, bifurcations, chaos of nonlinear %J Doklady Akademii Nauk %D 1990 %P 316-320 %V 314 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_314_2_a13/ %G ru %F DAN_1990_314_2_a13