| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| SAP-Lösungen testen | 978-3-89842-721-0 (3-89842-721-8) | 2006 | Michael Lauer · Hans Martin Trauthwein | |
| Testing SAP Solutions | 978-1-59229-127-4 (1-59229-127-9) | 2007 | Michael Lauer · Hans Martin Trauthwein |