| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Bakunin zur Einführung | 978-3-88506-817-4 (3-88506-817-6) | 1989 | ||
| The Illusion of Linearity: From Analysis to Improvement | 978-0-387-71082-2 (0-387-71082-5) | 2007 | Dirk De Bock · Dirk Janssens · Lieven Verschaffel | |