TY - JOUR AU - N. M. Kasumov TI - Calder\'on--Zygmund theory for kernels with nondiscrete sets of singularities JO - Sbornik. Mathematics PY - 1994 SP - 77 EP - 91 VL - 77 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1994_77_1_a5/ LA - en ID - SM_1994_77_1_a5 ER -