Tyagi, Somya, and Sikandar Siddiqui. “Yield Curve and Momentum Effects in Monthly U.S. Equity Returns: Some Nonparametric Evidence”. Asian Journal of Economics and Empirical Research 4, no. 2 (December 4, 2017): 61–67. Accessed March 9, 2025. http://mail.asianonlinejournals.com/index.php/AJEER/article/view/231.