%0 Journal Article %A V. M. Volosov %T Averaging in certain systems of differential equations %J Doklady Akademii Nauk %D 1962 %P 713-715 %V 145 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_145_4_a2/ %G ru %F DAN_1962_145_4_a2