M. H. · Markus Helfen and Hans Martin Trauthwein · Markus Helfenstein
| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| SAP-Lösungen testen | 978-3-8362-1415-5 | 2009 | Hans Martin Trauthwein | |
| SAP-Lösungen testen | 978-3-89842-721-0 | 2006 | Michael Lauer · Hans Martin Trauthwein | |
| Testing SAP Solutions | 978-1-59229-366-7 | 2010 | Hans Martin Trauthwein | |
| Testing SAP Solutions | 978-1-59229-127-4 | 2007 | Michael Lauer · Hans Martin Trauthwein |