- Author: Norbert Waszek (Hrsg.)
- Language: German
- Year: 2019
- Author: norbert Waszek
- Language: English
- Year: 1988
- Author: Norbert Waszek
- Language: French
- Year: 2003
- Author: Norbert Waszek
- Language: German
- Year: 2019
- Author: Norbert Waszek (auth.)
- Language: English
- Year: 1988