%0 Journal Article
%A E. Ch. Titchmarsh
%T Eigenfunction expansions associated with partial differential equations (III)
%J Matematika
%D 1957
%P 61-78
%V 1
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAT_1957_1_2_a3/
%G ru
%F MAT_1957_1_2_a3