- Author: Nicolin Friedhelm, Pöggeler Otto
- Language: German
- Year: 1989
- Author: Enrico Peroli
- Language: German
- Author: Klaus Steigleder
- Language: German
- Author: Georg Wilhelm Friedrich Hegel
- Language: German
- Author: Franz Schupp
- Language: German
- Author: Heiner Hastedt
- Language: German
- Author: Birgit Sandkaulen, Michael Quante (Hg.)
- Language: German
- Author: Karl Eibl (Hg.)
- Language: German
