Note 248 — Chapter XVI · The Kara-Khānides, or Uïghūrs
Reading edition
The exact position of this town, which during the tenth and eleventh centuries was the capital of the Khāns of Turkestān (see Ibn el-Athīr), is not known. Abulfeda says it was not far from Kāshghar. Juvaynī says that in the days of the Mongols it was called Gu-Balik.