- Author: Friedrich Jeppe
- Language: German
- Year: 1868
- Author: Alexander Fedorovich Rittich
- Language: German
- Year: 1878
- Author: Carl Mauch
- Language: German
- Year: 1874
- Author: Gustav Adolf Haggenmacher
- Language: German
- Year: 1876
- Author: Bruno Hassenstein August Petermann
- Language: German
- Year: 1861