%0 Journal Article
%A P. E. Krasnushkin
%T Normal wave expansion in a spherically stratified medium
%J Doklady Akademii Nauk
%D 1969
%P 1262-1265
%V 185
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1969_185_6_a15/
%G ru
%F DAN_1969_185_6_a15