https://www.academia.edu/44267844/We_have_no_influence_over_Don_Cossacks https://www.amazon.com/Atlas-Russo-Turkish-wars-1918/dp/B0851LLVCB/ref=sr_1_1?dchild=1&keywords=RUSSO+TURKISH+WARS+AGHA+H+AMIN&qid=1602335667&s=books&sr=1-1
