%0 Journal Article %A V. V. Ivanov %A E. A. Karagodova %A È. K. Yadrenko %T Approximate methods of determining the dynamic characteristics of controlled systems %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1961 %P 523-541 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1961_1_3_a10/ %G ru %F ZVMMF_1961_1_3_a10