
- Author: Dieter Richter Michael Monkenbusch Arantxa Arbe Juan Colmenero
- Language: English
- Year: 2005

- Author: Dieter Richter M. Monkenbusch Arantxa Arbe Juan Colmenero
- Language: English
- Year: 2009

- Author: Dieter Richter M. Monkenbusch Arantxa Arbe Juan Colmenero
- Language: English
- Year: 2009