Anwar IL, Damang K, Pakki E. Comparison Analysis of Optimal Portfolio Formation on Jakarta Islamic Index 70 (JII70) (Markowitz Model and Single Index Model Approach). ASSRJ [Internet]. 2022May25 [cited 2024Nov.21];9(5):224-41. Available from: https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/12379