Cholil, Muhammad Iqbal, Deni Saepudin, and Aniq Atiqi Rohmawati. “Implementasi Dempster Shafer Dalam Pembentukkan Portofolio Mean Varian”. Indonesian Journal on Computing (Indo-JC) 5, no. 1 (April 14, 2020): 23-32. Accessed March 6, 2021. https://socj.telkomuniversity.ac.id/ojs/index.php/indojc/article/view/371.