%0 Journal Article
%A K. Vogtmann
%A M. Culler
%T Moduli of graphs and automorphisms of free groups.
%J Inventiones mathematicae
%D 1986
%P 91-120
%V 84
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1986__84_143335/
%F IM_1986__84_143335