%0 Journal Article
%A V. P. Maslov
%T An asymptotic expression for the eigenfunctions of the equation $\Delta u+k^2u=0$ with boundary conditions on equidistant curves and the propagation of electromagnetic waves in a waveguide
%J Doklady Akademii Nauk
%D 1958
%P 631-633
%V 123
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1958_123_4_a13/
%G ru
%F DAN_1958_123_4_a13