TY - JOUR AU - Abdellah Youssfi TI - Regularity properties of singular integral operators JO - Studia Mathematica PY - 1996 SP - 199 VL - 119 IS - 3 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/STUMA_1996__119_3_216296/ LA - en ID - STUMA_1996__119_3_216296 ER -