%0 Journal Article %A V. A. Yakubovich %T Periodic and almost periodic limiting states of control systems with several, in general discontinuous, nonlinear terms %J Doklady Akademii Nauk %D 1966 %P 533-536 %V 171 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_171_3_a7/ %G ru %F DAN_1966_171_3_a7