- Author: Reinhard Bork, Markus Gehrlein
- Language: German
- Year: 2014
- Author: Reinhard Bork, Markus Gehrlein
- Language: German
- Year: 2017
- Author: Reinhard Bork, Markus Gehrlein
- Language: German
- Year: 2014
- Author: Reinhard Bork, Gerrit Hölzle (editors)
- Language: German
- Year: 2014
- Author: Reinhard Bork, Carsten Schäfer
- Language: German
- Year: 2015
- Author: Reinhard Bork, Carsten Schäfer
- Language: German
- Year: 2015
- Author: Reinhard Bork, Markus Gehrlein
- Language: German
- Year: 2020
- Author: Reinhard Bork, Christoph Thole
- Language: German
- Year: 2018
- Author: Reinhard Bork, Markus Gehrlein
- Language: German
- Year: 2017
GmbHG
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- Author: Reinhard Bork (editor), Carsten Schäfer (editor)
- Language: German
- Year: 2022