TY - JOUR AU - K. I. Babenko TI - The theory of extremal problems for univalent functions of class~$S$ JO - Informatics and Automation PY - 1972 SP - 3 EP - 321 VL - 101 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1972_101_a0/ LA - ru ID - TRSPY_1972_101_a0 ER -