%0 Journal Article %A Yu. M. Berezanskii %T Smoothness of the spectral function of a self-adjoint elliptic differential operator up to the boundary of the domain %J Doklady Akademii Nauk %D 1963 %P 511-514 %V 152 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_3_a0/ %G ru %F DAN_1963_152_3_a0