Bogoviz, A. V., Ragulina, Y. V., Lobova, S. V., & Alekseev, A. N. (2019). A quantitative Analysis of Energy Security Performance by Brazil, Russia, India, China, and South Africa in 1990-2015. International Journal of Energy Economics and Policy, 9(3), 244–250. Retrieved from https://econjournals.com/index.php/ijeep/article/view/7585