%0 Journal Article %A Celso Martínez %A Antonia Redondo %A Miguel Sanz %T Suitable domains to define fractional integrals of Weyl via fractional powers of operators %J Studia Mathematica %D 2011 %P 145-164 %V 202 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm202-2-3/ %R 10.4064/sm202-2-3 %G en %F 10_4064_sm202_2_3