%0 Journal Article %A M. M. Simkin %T Complex steady motions in nonlinear sampled-data systems %J Doklady Akademii Nauk %D 1963 %P 586-588 %V 149 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_149_3_a25/ %G ru %F DAN_1963_149_3_a25