TY - JOUR AU - V. V. Chernikov TI - $\alpha$-Convexity of order~$\beta$ of the class of all regular univalent functions in a circle JO - Matematičeskie zametki PY - 1981 SP - 859 EP - 866 VL - 29 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1981_29_6_a6/ LA - ru ID - MZM_1981_29_6_a6 ER -