%0 Journal Article %A L. GÄrding %T On the asymptotic properties of the spectral function belonging to a self-adjoint semi-bounded extension of an elliptic differential operator %J Matematika %D 1957 %P 117-132 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAT_1957_1_3_a5/ %G ru %F MAT_1957_1_3_a5