%0 Journal Article %A Vincent Guirardel %A Gilbert Levitt %T Deformation spaces of trees %J Groups, geometry, and dynamics %D 2007 %P 135-181 %V 1 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/8/ %R 10.4171/ggd/8 %F 10_4171_ggd_8