%0 Journal Article
%A M. M. Khapaev
%T On averaging in multifrequency systems
%J Doklady Akademii Nauk
%D 1974
%P 1021-1024
%V 217
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_217_5_a8/
%G ru
%F DAN_1974_217_5_a8