TY - JOUR AU - R. R. Akopyan TI - Analog of the Hadamard Theorem and Related Extremal Problems on the Class of Analytic Functions JO - Trudy Instituta matematiki i mehaniki PY - 2020 SP - 32 EP - 47 VL - 26 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMM_2020_26_4_a1/ LA - ru ID - TIMM_2020_26_4_a1 ER -