Oktavianus Yusan, Budi, and Selamet Riyadi. “Portfolio Optimization: Application and Comparison of Markowitz Model and Single Index Model on LQ45 Stocks in Indonesia Stock Exchange”. International Journal of Management Science and Application 3, no. 1 (February 13, 2024): 57–85. Accessed September 17, 2024. https://ejournal.sultanpublisher.com/index.php/ijmsa/article/view/210.