Salisu, Afees, and Idris Adediran. “The U.S. Shale Oil Revolution and the Behavior of Commodity Prices”. Econometric Research in Finance 3, no. 1 (September 3, 2018): 27 - 53. Accessed August 20, 2019. https://erfin.org/journal/index.php/erfin/article/view/30.