| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Technische Regeln Ölanlage: TRÖL | 978-3-200-02045-0 (3-200-02045-8) | 2011 | Franz Heger · Gerald Petz | |
| The EU-NATO Relationship: A Legal and Political Perspective | 978-0-7546-4759-1 (0-7546-4759-5) | 2006 | ||