- Author: Виндельбанд.
- Language: Русский
- Year: 1898
- Author: Милюков П.
- Language: Русский
- Year: 1902
- Author: Шевырев И.
- Language: Русский
- Year: 1893
- Author: В. В. Радлов
- Language: Русский
- Year: 1896
- Author: Айналов Д.В.
- Language: Русский
- Year: 1900
- Author: Милюков П.Н.
- Language: Русский
- Year: 1901
- Author: Милюков П.Н.
- Language: Русский
- Year: 1903
- Author: Милюков П.Н.
- Language: Русский
- Year: 1896