C. Edmund Bosworth (2005), "Osrušana", in Encyclopaedia Iranica. Online Accessed November 2010 [1] Quote 1: "The region was little urbanized, and it long preserved its ancient Iranian feudal and patriarchal society". Quote 2: "At the time of the Arab incursions into Transoxania, Osrušana had its own line of Iranian princes, the Afšins (Ebn Ḵordāḏbeh, p. 40), of whom the most famous was the general of the caliph Moʿtaṣem (q.v. 833-42), the Afšin Ḵayḏar or Ḥaydar b. Kāvus (d. 841; see Afšin)", "The region was little urbanized, and it long preserved its ancient Iranian feudal and patriarchal society."
