"The Kurds of Caucasia and Central Asia have been cut off for a considerable period of time and their development in Russia and then in the Soviet Union has been somewhat different. In this light the Soviet Kurds may be considered to be an ethnic group in their own right." The Red Book of the Peoples of the Russian Empire “Kurds”. Institute of Estonia (EKI). Institute of Estonia (EKI). 22 June 2012閲覧。