1. Combings of Groups;Alonso,1992
2. Automatic groups and amalgams;Baumslag;J. Pure Appl. Algebra,1991
3. Word Processing in Groups;Cannon,1992
4. Problèmes combinatoires de commutation et réarrangements;Cartier,1969
5. Subgroups of graph groups;Droms;J. Algebra,1987