- Author: Helga Fritsch Wolfgang Kühnel
- Language: German
- Year: 2018
- Author: Werner Platzer, Thomas Shiozawa-Bayer, Helga Fritsch, Wolfgang Kühnel, Werner Kahle, Michael Frotscher
- Language: German
- Year: 2018
- Author: Werner Platzer Helga Fritsch Wolfgang Kühnel Werner Kahle
- Language: Spanish
- Year: 2000