%0 Journal Article %A V. V. Kozlov %T Averaging in the neighborhood of stable periodic motions %J Doklady Akademii Nauk %D 1982 %P 567-570 %V 264 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1982_264_3_a11/ %G ru %F DAN_1982_264_3_a11