- Author: Röbbe Wünschiers
- Language: English
- Year: 2021
- Author: Röbbe Wünschiers
- Language: English
- Year: 2021
- Author: Röbbe Wünschiers
- Language: English
- Year: 2021
- Author: Röbbe Wünschiers
- Language: German
- Year: 2019
- Author: Röbbe Wünschiers
- Language: German
- Year: 2019
- Author: Röbbe Wünschiers (auth.)
- Language: English
- Year: 2013
- Author: Dr. Röbbe Wünschiers (auth.)
- Language: English
- Year: 2004