%0 Journal Article
%A A.L. Edmonds
%A J.H. Ewing
%A R. Kulkarni
%T Torsion Free Subgroups of Fuchsian Groups and Tessalations of Surfaces.
%J Inventiones mathematicae
%D 1982
%P 331-346
%V 69
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1982__69_142957/
%F IM_1982__69_142957