TY - JOUR AU - Ya. I. Al'ber TI - Solution of nonlinear operator equations by steepest descent type methods JO - Doklady Akademii Nauk PY - 1970 SP - 255 EP - 258 VL - 193 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1970_193_2_a0/ LA - ru ID - DAN_1970_193_2_a0 ER -