Subekti R, Abdurakhman, Rosadi D, Hasim HM. Integrating Zakat and Purification in a Modified Black–Litterman Model for Shariah-Compliant Stock Portfolios. 5002 [Internet]. 2022 Jul. 29 [cited 2024 Nov. 22];12(7):549-64. Available from: https://archive.aessweb.com/index.php/5002/article/view/4554