Choon-Peng, Tan, and Tang Siew-Fun. “A Comparison of Two Types of Universal Portfolios Based on Some Stock-Price Data”. Malaysian Journal of Science 22, no. 2 (August 28, 2003): 127–133. Accessed December 23, 2024. https://mjlis.um.edu.my/index.php/MJS/article/view/8527.