Zayonchkovskiy, Y., and V. Tishkin. “SILVER COINS OF MAHMUD B. MUHAMMAD B. TIMUR KHAN MINTED IN HAJJI TARKHAN”. The Ukrainian Numismatic Annual, no. 4, Dec. 2020, pp. 114-30, doi:10.31470/2616-6275-2020-4-114-130.