%0 Journal Article %A Richard L. Wheeden %T A characterization of some weighted norm inequalities for the fractional maximal function %J Studia Mathematica %D 1993 %P 257-272 %V 107 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-107-3-257-272/ %R 10.4064/sm-107-3-257-272 %G en %F 10_4064_sm_107_3_257_272