Astrakhan Khanate 2024
Astrakhan: Russia's least Russian oblast at the crossroads of emerging separatisms New Eastern Europe
Turkey and Russia: History Fuels Rancor Eurasianet
(PDF) Exploring Moscow's Past: Golden Horde & Ivan the Terrible ResearchGate
The North Caucasus Borderland: Between Muscovy and the Ottoman Empire, 1555-1605 Middle East Monitor