Rtveladze, Edvard, Istoriya i Numizmatika Chacha (Vtoraya Polovina III - Seredina VIII v. n. e, Akademiya Nauk Respubliki Uzbekistan and Gosudarstvennyi Muzei Istorii Uzbekistana, Tashkent, 2006, 131 pages, softcover. English title as "The History and Numismatics of Chach, Second Half of the 3rd Century to Mid 8th Century AD." Nice catalog of Chach coinage, expanding and updating his earlier works. Text in Russian, ex James Farr Collection Library.
Estimate: 15-25 USD