%0 Journal Article %A Atanas Stefanov %T Weak type estimates for certain Calderón–Zygmund singular integral operators %J Studia Mathematica %D 2001 %P 1-13 %V 147 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm147-1-1/ %R 10.4064/sm147-1-1 %G en %F 10_4064_sm147_1_1