TY - JOUR AU - Burton Rodin AU - S.E. Warschawski TI - On the Derivative of the Riemann Mapping Function Near a Boundary Point and the Visser-Ostrowski Problem. JO - Mathematische Annalen PY - 1980 SP - 125 EP - 138 VL - 248 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1980__248_163373/ ID - MAN_1980__248_163373 ER -