Combinatorial group theory/
Roger C. Lyndon,Paul E. Schupp
- New York : Springer, 2001.
- xvi,339p. : 25cm.
- Classics in mathematics. .
Includes index.
Chapter I. Free Groups and Their Subgroups Chapter II. Generators and Relations Chapter III. Geometric Methods Chapter IV. Free Products and HNN Extensions Chapter V. Small Cancellation Theory