| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Ecotourism: As an Alternative Development Option for Rural Sites | 978-3-8465-8741-6 (3-8465-8741-9) | 2012 |
| Risk Management: During Preconstruction Phases of Large Scale Development Projects in Developing Countries | 978-3-8465-8167-4 (3-8465-8167-4) | 2012 |