
- Author: Henrik Simojoki, Martin Rothgangel, Ulrich H.J. Körtner
- Language: German
- Year: 2022

- Author: Ulrich H.J. Körtner
- Year: 2017

- Author: Ulrich H.J. Körtner
- Language: German
- Year: 1983

- Author: Martin Rothgangel, Henrik Simojoki, Ulrich H.J. Körtner
- Language: German
- Year: 2019

- Author: Ulrich H.J. Körtner
- Language: German
- Year: 2010

- Author: Ulrich H. J. Körtner
- Language: German
- Year: 2019

- Author: Ulrich H. J. Körtner
- Language: German
- Year: 1988