- Author: Konrad Gaiser
- Language: German
- Year: 1961
- Author: Konrad Gaiser Marcello Gigante (editor)
- Language: Italian
- Year: 1984
- Author: Konrad Gaiser
- Language: Italian
- Year: 1985
- Author: Konrad Gaiser
- Language: Italian
- Year: 1991
- Author: Konrad Gaiser
- Language: German
- Author: Konrad Gaiser
- Language: Italian
- Year: 1994