%0 Journal Article %A Ioana Cioranescu %T Operator-Valued Ultradistributions in the Spectral Theory. %J Mathematische Annalen %D 1976 %P 1-12 %V 223 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1976__223_162872/ %F MAN_1976__223_162872