- Author: Alicia Noors
- Language: German
- Year: 2018
- Author: Alicia Noors, Mark B.
- Language: German
- Year: 2018
- Author: Boger Nicole
- Language: German
- Year: 2016
- Author: Boger Daniel
- Language: German
- Year: 2015
- Author: Boger Daniel
- Language: German
- Year: 2016