TY - JOUR AU - V. V. Kisil TI - Local behavior of two-sided convolution operators with singular kernels on the Heisenberg group JO - Matematičeskie zametki PY - 1994 SP - 41 EP - 55 VL - 56 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1994_56_2_a2/ LA - ru ID - MZM_1994_56_2_a2 ER -