| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| East and West in the Crusader States. Context - Contacts - Confrontations. Acta of the Congress Held at Hernen Castle in May 1993 | 978-90-6831-792-3 | 1996 | K Ciggaar |
| East and West in the Crusader States. Context - Contacts - Confrontations II. Acta of the Congress Held at Hernen Castle in May 1997 | 978-90-429-0786-7 | 1999 | " |
| East and West in the Crusader States. Context - Contacts - Confrontations III. Acta of the congress held at Hernen Castle in September 2000 | 978-90-429-1287-8 | 2003 | " |
| Studies on the Christian Arabic Heritage | 978-90-429-1464-3 | 2004 | RY Ebied |