Luft, Carl, Jin Man Lee, and Jin W. Choi. “‘Chicago Mercantile Exchange Bitcoin Futures: Volatility, Liquidity and Margin’”. SPOUDAI Journal of Economics and Business 69, no. 3 (April 24, 2019): 55–74. Accessed April 8, 2025. https://spoudai.org/index.php/journal/article/view/129.