%0 Journal Article %A V. A. Yakubovich %T Graphical criteria for absolute stability and absolute instability of nonlinear control systems %J Doklady Akademii Nauk %D 1983 %P 307-310 %V 271 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_271_2_a12/ %G ru %F DAN_1983_271_2_a12