TY - JOUR AU - I. D. Mayergoyz TI - Estimates of the gradient of the solution of an elliptic equation on the boundary of the domain JO - Doklady Akademii Nauk PY - 1973 SP - 291 EP - 294 VL - 212 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1973_212_2_a5/ LA - ru ID - DAN_1973_212_2_a5 ER -