| title | ISBN-13 (ISBN-10) | year of publication | |
|---|---|---|---|
| Geschichte des christlichen Gottesdienstes | 978-3-11-002804-1 (3-11-002804-2) | 1970 | |
| Subversion Version Control: Using the Subversion Version Control System in Development Projects | 978-0-13-185518-2 (0-13-185518-2) | 2005 |