
- Author: Florian Völker
- Language: German
- Year: 2023

- Author: Florian Völker
- Language: German
- Year: 2023

- Author: Völker Stefan
- Language: German
- Year: 1990

- Author: Clara Völker
- Language: German
- Year: 2014

- Author: Elke Kleinau (editor), Dirk Schulz (editor), Susanne Völker (editor)
- Language: German
- Year: 2014

- Author: J. Lehmann, J. Völker, J. Völker
- Language: English
- Year: 2014