does not need copy.
| ISBN: | 9780821804445 |
| Publication date: | 30th March 1996 |
| Author: | Dieter Happel, Idun Reiten, Sverre O Smalø |
| Publisher: | American Mathematical Society |
| Format: | Paperback |
| Pagination: | 88 pages |
| Series: | Memoirs of the American Mathematical Society |
| Genres: |
Mathematics |