%0 Journal Article %A R. de Laubenfels %A K. Boyadzhiev %T Semigroups and resolvents of bounded variation, imaginary powers and H°° functional calculus. %J Semigroup forum %D 1992 %P 372-384 %V 45 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1992__45_3_135199/ %F SF_1992__45_3_135199