%0 Journal Article
%A Werner Ballmann
%T On the Dirichlet Problem at Infinity for Manifolds of Nonpositive Curvature.
%J Forum mathematicum
%D 1989
%P 201-214
%V 1
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FORUM_1989__1_3_141612/
%F FORUM_1989__1_3_141612