JSJ decompositions and complexes of groups,(with K.Fujiwara) preprint, July 1998

Quasi-isometry invariance of group splittings preprint (ps file)

A note on a theorem of Bowditch preprint (ps file)

Isodiametric and isoperimetric inequalities for complexes and groups appeared in the Journal of LMS, no. 62, p.97-106 (2000) (ps file)

Group splittings and asymptotic topology preprint (ps file)