@article{02062447, title = {Deformation and rigidity of simplicial group actions on trees.}, journal = {Geometry \& Topology}, volume = {6}, year = {2002}, pages = {219-267}, doi = {10.2140/gt.2002.6.219}, zbl = {1118.20028}, language = {en}, url = {http://dml.mathdoc.fr/item/02062447} }
Forester, Max. Deformation and rigidity of simplicial group actions on trees.. Geometry & Topology, Tome 6 (2002) pp. 219-267. doi : 10.2140/gt.2002.6.219. http://gdmltest.u-ga.fr/item/02062447/