Sasana, Hadi, and Imam Ghozali. “The Impact of Fossil and Renewable Energy Consumption on the Economic Growth in Brazil, Russia, India, China and South Africa”. International Journal of Energy Economics and Policy, vol. 7, no. 3, July 2017, pp. 194-00, https://econjournals.org.tr/index.php/ijeep/article/view/4926.