| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Challenge to Islam for Reformation: The Rediscovery and reliable Reconstruction of a comprehensive pre-Islamic Christian Hymnal hidden in the Koran under earliest Islamic Reinterpretations | 978-81-2O8-1952-8 (81-2O8-1952-7) | 2003 |