
- Author: Werner Wolf Walter Bernhart
- Language: English
- Year: 2006

- Author: Walter Bernhart Werner Wolf
- Language: English
- Year: 2004

- Author: Walter Bernhart
- Language: English, German
- Year: 2006

- Author: Werner Wolf Walter Bernhart
- Language: English
- Year: 2007

- Author: Walter Bernhart
- Language: English
- Year: 2006