1. 2-Ibid., 3-Zerohedge, "China Takes First Step in Paying for Crude Imports in Yuan;Irina Slav;Oilprice.com,2018
2. Has the Petrodollar Had Its Day?;G Mamdouh;(UASEE Working Paper Series,2015
3. China Prepares Death Blow to the Dollar;Zerohedge;Oilprice.com,2018
4. Petro-yuan" Pakistan Today;; Zerohedge;Will the Dolar Survive the Petro-yuan? Oilprice.com,2011