Tremblay, Xavier (2007). "The Spread of Buddhism in Serindia: Buddhism Among Iranians, Tocharians and Turks before the 13th Century". In Heirman, Ann; Bumbacker, Stephan Peter (eds.). The Spread of Buddhism. Leiden: Koninklijke Brill. p. 77. ISBN978-90-04-15830-6.
Tikhvinskiĭ, Sergeĭ Leonidovich; Perelomov, Leonard Sergeevich (1981). China and her neighbours, from ancient times to the Middle Ages: a collection of essays. Progress Publishers. p. 124. OCLC8669104.