- Author: Berthold Block (auth.)
- Language: German
- Year: 1921
- Author: Hugo Schröder (auth.)
- Language: German
- Year: 1918
- Author: Dr.-Ing. H. Jordan (auth.)
- Language: German
- Year: 1920
- Author: Ingenieur Hans Melhardt (auth.)
- Language: German
- Year: 1929
- Author: Ob.-Ing. Ed. Wurtz (auth.)
- Language: German
- Year: 1927