- Author: Stille Frank, Filip-Köhn Renate, Flassbeck Heiner, Görzig Bernd, Schulz Erika, Stäglin Reiner
- Language: German
- Year: 1988
- Author: Flassbeck Heiner, Horn Gustav Adolf, Zwiener Rudolf
- Language: German
- Year: 1992
- Author: Wahl Peter, Streeck Wolfgang, Mausfeld Rainer, Flassbeck Heiner, Ali Tariq
- Language: German
- Year: 2020
- Author: Flassbeck Heiner, Lapavitsas Costas
- Language: English
- Year: 2015