| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Combinatorial Group Theory | 978-3-540-07642-1 (3-540-07642-5) | 1977 | P. E. Schupp | |
| Word Problems: Decision Problems and the Burnside Problem in Group Theory | 978-0-7204-2271-9 (0-7204-2271-X) | 1973 | W. W. Boone · F. B. Cannonito |
C L · R. C. · R C L · R. L · R. Lyndon · Roger C. Lyndon