^Alexey V. Arapov.. “Boysun. Masterpieces of Central Asia”. 2014年3月25日閲覧。 “The Iron Gates were located on the old road in the canyon of Dara-i Buzgala-khana 3 km to northwest from Shurob kishlak.”
参考文献
Soucek,Svat (2000). A History Of Inner Asia. Cambridge University Press. p. 5. ISBN978-0521657044