%0 Journal Article %A Matt T. Clay %T Deformation spaces of $G$-trees and automorphisms of Baumslag–Solitar groups %J Groups, geometry, and dynamics %D 2009 %P 39-69 %V 3 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/51/ %R 10.4171/ggd/51 %F 10_4171_ggd_51