Samawi, G. A., M. F. Mdanat, and T. S. Arabiyat. “The Role of Energy Supply in Economic Growth: Evidence from the Oil Importing Countries”. International Journal of Energy Economics and Policy, vol. 7, no. 6, Dec. 2017, pp. 193-00, https://www.econjournals.com/index.php/ijeep/article/view/5357.