%0 Journal Article %A V. V. Strygin %T Peculiarities of the averaging principle for evolution equations %J Doklady Akademii Nauk %D 1969 %P 535-537 %V 188 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_188_3_a10/ %G ru %F DAN_1969_188_3_a10