| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Corporate Valuation in the Knowledge Economy: Knowledge Accounting and Knowledge Valuation in Information Business | 978-3-638-72947-5 (3-638-72947-8) | 2007 |
| Development-Guideline of eBusiness considering international accounting and taxation aspects | 978-3-638-65305-3 (3-638-65305-6) | 2007 |