TY - JOUR AU - M. N. Gurov AU - V. A. Nogin TI - Estimates for some potential type operators whose kernels have singularities on spheres JO - Vladikavkazskij matematičeskij žurnal PY - 2014 SP - 12 EP - 23 VL - 16 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMJ_2014_16_1_a1/ LA - ru ID - VMJ_2014_16_1_a1 ER -