Wei, Ching-Chun, and Shu-Min Chen. “Examining the Relationship of Crude Oil Future Price Return and Agricultural Future Price Return in US”. International Journal of Energy Economics and Policy 6, no. 1 (January 18, 2016): 58–64. Accessed November 23, 2024. https://econjournals.com/index.php/ijeep/article/view/1555.