1. Inégalitiés isopérimétriques et quasi-isométries;Alonso;C. R. Acad. Sci. Paris Ser. I Math.,1990
2. Automatic groups and amalgams;Baumslag;J. Pure Appl. Algebra,1991
3. Asymptotic cones and polynomial isoperimetric inequalities;Bridson;Topology,1999
4. The geometry of the word problem;Bridson,2002
5. Metric Spaces of Non-Positive Curvature;Bridson,1999