Rajesh, R., and A. Satya Nandini. “Hedging Efficiency of Energy Commodities Between Indian and American Commodity Exchanges: Constant and Time-Varying Approaches”. International Journal of Energy Economics and Policy 13, no. 6 (November 10, 2023): 537–546. Accessed December 28, 2024. https://econjournals.net.tr/index.php/ijeep/article/view/15062.