- Author: Schmidt Günter
- Language: German
- Year: 1968
- Author: Schmidt Günter
- Language: German
- Year: 1965
- Author: Schmidt Günter, Beuscher-Willems Barbara
- Language: German
- Year: 2005
- Author: Binnig Gerd, Huss Ralf, Schmidt Günter
- Language: English
- Year: 2018