TY - JOUR AU - Atanas Stefanov TI - Weak type estimates for certain Calderón–Zygmund singular integral operators JO - Studia Mathematica PY - 2001 SP - 1 EP - 13 VL - 147 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm147-1-1/ DO - 10.4064/sm147-1-1 LA - en ID - 10_4064_sm147_1_1 ER -