%0 Journal Article %A A. G. Kolpakov %T Averaging of some systems of ordinary differential equations %J Sbornik. Mathematics %D 1984 %P 527-540 %V 47 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1984_47_2_a14/ %G en %F SM_1984_47_2_a14