Arshad, Zeeshan, et al. “Renewable and Non-Renewable Energy, Economic Growth and Natural Resources Impact on Environmental Quality: Empirical Evidence from South and Southeast Asian Countries With CS-ARDL Modeling”. International Journal of Energy Economics and Policy, vol. 10, no. 5, Aug. 2020, pp. 368-83, https://econjournals.com/index.php/ijeep/article/view/9956.