TY - JOUR AU - I. A. Kipriyanov AU - M. I. Klyuchantsev TI - Estimates of a surface potential which is generated by a generalized shift operator JO - Doklady Akademii Nauk PY - 1969 SP - 997 EP - 1000 VL - 188 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_188_5_a8/ LA - ru ID - DAN_1969_188_5_a8 ER -