
- Author: Christoph Marx
- Language: English
- Year: 2023

- Author: Christoph Marx
- Language: English
- Year: 2023

- Author: Peter Burschel, Christoph Marx
- Language: German
- Year: 2013

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- Author: Peter Burschel, Christoph Marx
- Language: German
- Year: 2011

- Author: Christoph Marx
- Language: German
- Year: 2020

- Author: Christoph Marx
- Language: German
- Year: 2020