TY - JOUR AU - G. V. Koritskii TI - Curvature of level curves in univalent conformal mappings JO - Doklady Akademii Nauk PY - 1957 SP - 653 EP - 654 VL - 115 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1957_115_4_a4/ LA - ru ID - DAN_1957_115_4_a4 ER -