- Author: Ehler Voss (editor)
- Language: English
- Year: 2020
- Author: Maren Sziede (editor), Helmut Zander (editor)
- Language: German
- Year: 2014
- Author: Ehler Voss (editor)
- Language: German
- Year: 2020
- Author: Maren Sziede (editor), Helmut Zander (editor)
- Language: German
- Year: 2014