Tran, T. N., T. T. Nguyen, V. C. Nguyen, and T. T. H. Vu. “Energy Consumption, Economic Growth and Trade Balance in East Asia: A Panel Data Approach”. International Journal of Energy Economics and Policy, vol. 10, no. 4, May 2020, pp. 443-9, https://www.econjournals.com/index.php/ijeep/article/view/9401.