%0 Journal Article
%A L. A. Kalyakin
%T On approximate methods of solving nonlinear boundary value problems with a~small parameter
%J Sbornik. Mathematics
%D 1976
%P 491-500
%V 28
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1976_28_4_a3/
%G en
%F SM_1976_28_4_a3