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- Language: German
- Year: 2016

- Author: Franz von Kutschera
- Language: German
- Year: 1973

- Author: Jean L Marion, Walter Schweidler (eds.)
- Language: German
- Year: 2016

- Author: Wolfdietrich Schmied-Kowarzik
- Language: German
- Year: 2016

- Author: Walter Falk
- Language: German
- Year: 1976

- Author: Markus Gabriel
- Language: German
- Year: 2008

- Author: Eugen Fink
- Language: German
- Year: 1957