%0 Journal Article %A Shuichi Sato %T Estimates for singular integrals and extrapolation %J Studia Mathematica %D 2009 %P 219-233 %V 192 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm192-3-2/ %R 10.4064/sm192-3-2 %G en %F 10_4064_sm192_3_2