Sukcharoen, Kunlapath, and David Leatham. “Analyzing Extreme Comovements in Agricultural and Energy Commodity Markets Using a Regular Vine Copula Method”. International Journal of Energy Economics and Policy 8, no. 5 (September 5, 2018): 193–201. Accessed April 27, 2024. https://econjournals.com/index.php/ijeep/article/view/6804.