%0 Journal Article
%A P. E. Krasnushkin
%T The properties of normal waves in periodic wave guides close to the multiplicity of the wave numbers
%J Doklady Akademii Nauk
%D 1973
%P 1053-1056
%V 209
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_209_5_a13/
%G ru
%F DAN_1973_209_5_a13