- ./edge-fig.ps
A class of automorphism
groups of polygonal complexes, Quart. J. Math 52 (2001), 231-247.
- ./invol2.ps
Some infinite groups generated by involutions have Kazhdan's property (T),
Forum Mathematicum 13 (2001), 741-755.
- ./graf2.ps
Estimates for homological dimension of configuration spaces of graphs,
Colloquium Math. 89 (2001), 69-79.
- ./grpr.dvi
(with Tadeusz Januszkiewicz) Commensurability of graph products,
Algebraic and Geometric Topology 1 (2001), 587-603.