%0 Journal Article
%A Burton Rodin
%A S.E. Warschawski
%T On the Derivative of the Riemann Mapping Function Near a Boundary Point and  the Visser-Ostrowski Problem.
%J Mathematische Annalen
%D 1980
%P 125-138
%V 248
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1980__248_163373/
%F MAN_1980__248_163373