1. Simple Algebras, Base Change, and the Advanced Theory of the Trace Formula;Arthur,1989
2. Twisted conjugacy in free groups and Makanin's question;Bardakov;Southeast Asian Bull. Math.,2005
3. A combination theorem for negatively curved groups;Bestvina;J. Differential Geom.,1992
4. Braids, Links and Mapping Class Groups;Birman,1974