TY - JOUR AU - Hiroshi Haruki TI - An equivalent property to Ivory's theorem from the standpoint of conformal mapping JO - Annales Polonici Mathematici PY - 1977 SP - 233 EP - 242 VL - 34 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-34-3-233-242/ DO - 10.4064/ap-34-3-233-242 LA - en ID - 10_4064_ap_34_3_233_242 ER -