H. Pilkington,"Islam in Post-Soviet Russia",Psychology Press, Nov 27, 2002 . pg 27:
"Among other indigenous peoples of Iranian origin were the Tats, the Talishes and the Kurds"[1]
T. M. Masti︠u︡gina, Lev Perepelkin, Vitaliĭ Vi͡a︡cheslavovich Naumkin, "An Ethnic History of Russia: Pre-Revolutionary Times to the Present",Greenwood Publishing Group, 1996 . pg 80:""The Iranian Peoples (Ossetians, Tajiks, Tats, Mountain Judaists)" [2]