Izzat Firdausi. ANALISIS PORTOFOLIO OPTIMAL SYARIAH PASCA COVID-19 MELALUI MODEL INDEKS TUNGGAL. JUMBIKU [Internet]. 2023 Dec. 30 [cited 2024 May 10];3(3):107-23. Available from: https://ejurnal.politeknikpratama.ac.id/index.php/JUMBIKU/article/view/3621