%0 Journal Article
%A Z. A. Yanson
%T High order approximations of asymptotic solutions for wave equation in a~plane waveguide
%J Zapiski Nauchnykh Seminarov POMI
%D 1972
%P 176-191
%V 25
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1972_25_a11/
%G ru
%F ZNSL_1972_25_a11