Soeryana Hasbullah, Endang, Nurfadhlina bt Abdul Halim, Sukono ., Adam Sukma Putra, and Abdul Talib Bon. “Mean-Variance Portfolio Optimization on Islamic Stocks by Using Non Constant Mean and Volatility Models and Genetic Algorithm”. International Journal of Engineering & Technology 7, no. 3.20 (September 1, 2018): 366–371. Accessed April 28, 2024. https://sciencepubco.com/index.php/ijet/article/view/19274.