Hasan, M. Z. and Ratti, R. A. (2015) “Coal Sector Returns and Oil Prices: Developed and Emerging Countries”, International Journal of Energy Economics and Policy, 5(2), pp. 515–524. Available at: https://www.econjournals.com/index.php/ijeep/article/view/1142 (Accessed: 21 July 2024).