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- Language: German
- Year: 2018
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- Language: German
- Year: 2013
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- Language: German
- Year: 2013
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- Language: German
- Year: 2013
- Author: Minnert Jens
- Language: German
- Year: 2015
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- Language: German
- Year: 2013
- Author: Fingerloos Frank, Hegger Josef, Zilch Konrad
- Language: German
- Year: 2016
- Author: Schubert Peter
- Language: German
- Year: 2014