Topological Manifolds
- Nathan M. Dunfield and William P. Thurston, The virtual Haken conjecture: experiments and examples, Geom. Topol. 7 (2003), 399–441 (electronic).[MR]
- Stephen P. Humphries, Free products in mapping class groups generated by Dehn twists, Glasgow Math. J. 31 (1989), no. 2, 213–218.[MR]
- Stephen P. Humphries, An action of subgroups of mapping class groups on polynomial algebras, Topology Appl. 154 (2007), no. 6, 1053–1083.[MR]