TY - JOUR AU - A. D. Aleksandrov TI - Certain estimates for the derivative of the solution of the Dirichlet problem on the boundary JO - Doklady Akademii Nauk PY - 1967 SP - 487 EP - 490 VL - 173 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1967_173_3_a0/ LA - ru ID - DAN_1967_173_3_a0 ER -