%0 Journal Article
%A L. Gårding
%T Eigenfunction expansions connected with elliptic differential operators
%J Matematika
%D 1957
%P 107-116
%V 1
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAT_1957_1_3_a4/
%G ru
%F MAT_1957_1_3_a4