%0 Journal Article %A G. V. Koritskii %T Curvature of level curves in univalent conformal mappings %J Doklady Akademii Nauk %D 1957 %P 653-654 %V 115 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_115_4_a4/ %G ru %F DAN_1957_115_4_a4