%0 Journal Article %A V. A. Yakubovich %T Frequency conditions for absolute stability of control systems with hysteresis-like non-linearities %J Doklady Akademii Nauk %D 1963 %P 288-291 %V 149 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_149_2_a17/ %G ru %F DAN_1963_149_2_a17