%0 Journal Article
%A L. A. Kalyakin
%T Ritz method for equations with small parameters for higher derivatives
%J Matematičeskie zametki
%D 1969
%P 91-96
%V 6
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1969_6_1_a10/
%G ru
%F MZM_1969_6_1_a10