%0 Journal Article
%A V. M. Volosov
%T Solutions of second order non-linear differential equations with slowly varying coefficients
%J Doklady Akademii Nauk
%D 1957
%P 1149-1152
%V 114
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_114_6_a2/
%G ru
%F DAN_1957_114_6_a2