- Author: Jörn Bockmann, Regina Toepfer
- Language: German
- Year: 2018
- Author: Regina Toepfer
- Language: German
- Year: 2013
- Author: Regina Toepfer
- Language: German
- Year: 2007
- Author: Regina Toepfer (Hrsg.)
- Language: German
- Year: 2019
- Author: Regina Toepfer
- Language: German
- Year: 2020
- Author: Regina Toepfer
- Language: German
- Year: 2013
- Author: Regina Toepfer
- Language: German
- Year: 2007