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Encyclopædia Britannica, "Timur", Online Academic Edition, 2007. Quotation: "Timur was a member of the Turkicized Barlas tribe, a Mongol subgroup that had settled in Transoxania..."
Krisciunas, Kevin (1992). "The Legacy of Ulugh Beg". In Paksoy, Hasan Bulent (ed.). Central Asian Monuments. Istanbul: Isis Press. Archived from the original on May 19, 2019. Retrieved June 27, 2006 – via Carrie Books.
"Ulugh Beg". The University of Oklahoma Libraries. Britannica Academic. Archived from the original on September 19, 2019. Retrieved December 4, 2018.
Krisciunas, Kevin (1992). "The Legacy of Ulugh Beg". In Paksoy, Hasan Bulent (ed.). Central Asian Monuments. Istanbul: Isis Press. Archived from the original on May 19, 2019. Retrieved June 27, 2006 – via Carrie Books.
