- Author: Seul Shirley
- Language: German
- Year: 2015
- Author: Panster Andrea, Romagnoli Gabriele
- Language: German
- Year: 2016
- Author: Kushner Harold S., Schellenberger Bernardin
- Language: German
- Year: 2016
- Author: Jungnikl Saskia
- Language: German
- Year: 2014