%0 Journal Article
%A Walter D. Neumann
%T On Leighton’s graph covering theorem
%J Groups, geometry, and dynamics
%D 2010
%P 863-872
%V 4
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4171/ggd/111/
%R 10.4171/ggd/111
%F 10_4171_ggd_111