| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Islam and Christianity. Mutual Perceptions Since the Mid-20th Century | 978-90-429-0004-2 (90-429-0004-0) | 1998 |
| Muslim-Christian Perceptions of Dialogue Today Experiences and Expectations | 978-90-429-0874-1 (90-429-0874-2) | 2000 |