%0 Journal Article %A S. M. Yugai %T An estimate of the curvature of the images of circles under maps given by convex univalent functions in a~disk %J Matematičeskie zametki %D 1993 %P 133-137 %V 53 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1993_53_1_a14/ %G ru %F MZM_1993_53_1_a14