- Author: Christian Brecher Manfred Weck
- Language: English
- Year: 2021
- Author: Christian Brecher Manfred Weck
- Language: English
- Year: 2020
- Author: Christian Brecher Manfred Weck
- Language: English
- Year: 2021
- Author: Christian Brecher Manfred Weck
- Language: English
- Year: 2022
- Author: Christian Brecher Manfred Weck
- Language: German
- Year: 2019
- Author: Christian Brecher Manfred Weck
- Language: German
- Year: 2017