%0 Journal Article
%A Appell, Jürgen
%A Simões, Marilda A.
%A Zabrejko, Petr P.
%T On the $\Cal L$-characteristic of fractional powers of linear operators
%J Commentationes Mathematicae Universitatis Carolinae
%D 1994
%P 21-34
%V 35
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1994__35_1_a2/
%G en
%F CMUC_1994__35_1_a2