%0 Journal Article
%A Viktor Schroeder
%A Susana Fornari
%T Ramified Coverings with Nonpositive Curvature.
%J Mathematische Zeitschrift
%D 1990
%P 123-128
%V 203
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1990__203_3_174117/
%F MZ_1990__203_3_174117