%0 Journal Article
%A N. M. Leontovich
%T The asymptotic expansion of boundary value problems for partial differential equations
%J Doklady Akademii Nauk
%D 1960
%P 742-745
%V 131
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_131_4_a6/
%G ru
%F DAN_1960_131_4_a6