| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Graph Reduction: Proceedings | 978-0-387-18420-3 (0-387-18420-1) | 1987 | ||
| Graph Reduction: Proceedings of a Workshop Santa Fe, New Mexico, USA, September 29 - October 1, 1986 | 978-3-540-18420-1 (3-540-18420-1) | 2008 | Robert M. Keller | |