- Author: Gerhard Stammler
- Language: German
- Year: 1921
- Author: Otto Liebmann
- Language: German
- Year: 1912
- Author: Eberhard Schrader (ed.)
- Language: German
- Year: 1896
- Author: Eberhard Schrader (ed.)
- Language: German
- Year: 1896
- Author: Carl Brockelmann
- Language: German
- Year: 1908
- Author: Carl Brockelmann
- Language: German
- Year: 1908
- Author: Carl Brockelmann
- Language: German
- Year: 1905