%0 Journal Article %A A. L. Štaras %T The averaging method for weakly nonlinear equations %J Doklady Akademii Nauk %D 1988 %P 1345-1348 %V 298 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_298_6_a14/ %G ru %F DAN_1988_298_6_a14