%0 Journal Article
%A Jaake Peetre
%T Some Remarks on Continuous Orthogonal Expansions, and Eigenfunction Expansions for Positive Self-Adjoint Elliptic Operators with Variable Coefficients.
%J Mathematica Scandinavica
%D 1965
%P 56-64
%V 17
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1965__17_165924/
%F MS2_1965__17_165924