- Author: Belitz Heike, Blazejczak Jürgen, Gornig Martin, Kohlhaas Michael, Schulz Erika, Seidel Thomas, Vesper Dieter
- Language: German
- Year: 1992
- Author: Michael Schulz, Roberto Hofmeister Pich
- Language: German
- Year: 2021
- Author: Michael Schulz, Estrella Guerra
- Language: Spanish, Castilian
- Year: 2022
- Author: Esther Gardei, Michael Schulz, Hans-Georg Soeffner
- Language: German
- Year: 2023
- Author: Michael Schulz (editor)
- Language: English
- Year: 2019
- Author: Georg-Michael Schulz
- Language: German
- Year: 1977
- Author: Georg-Michael Schulz
- Language: German
- Year: 1988
