| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Challenges in Natural Language Processing | Printed Access Code | 978-0-511-65947-8 (0-511-65947-4) | 2010 | Ralph M. Weischedel |
| Challenges in Natural Language Processing | Hardcover | 978-0-521-41015-1 (0-521-41015-0) | 1993 | " |