- Author: Martin Schmucker (auth.)
- Language: German
- Year: 2004
- Author: Michael Arnold, Martin Schmucker, Stephen D Wolthusen
- Language: English
- Year: 2003
- Author: Michael Arnold Stephen D. Wolthusen Martin Schmucker
- Language: English
- Year: 2003
- Author: Michael Arnold Stephen D. Wolthusen Martin Schmucker
- Language: English
- Year: 2003