- Author: Franz W. Peren
- Language: German
- Year: 2023
- Author: Franz W. Peren
- Language: English
- Year: 2022
- Author: Franz W. Peren
- Language: English
- Year: 2023
- Author: Franz W. Peren
- Language: English
- Year: 2023
- Author: Franz W. Peren
- Language: English
- Year: 2022
- Author: Franz W. Peren
- Language: English
- Year: 2021
- Author: Franz W. Peren (auth.)
- Language: German
- Year: 2016
- Author: Franz W. Peren (auth.)
- Language: German
- Year: 2015