| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Globale Portalsysteme mit SAP: SAP-Heft 47 | 978-3-89842-991-7 (3-89842-991-1) | 2008 | Valentin Nicolescu · Helmut Krcmar | |
| Global Portal Systems with SAP: SAP PRESS Essentials 45 | 978-1-59229-212-7 (1-59229-212-7) | 2008 | Valentin Nicolescu · Helmut Krcmar |