Dede Resi Aristya, Nina Agustina, Ng, T. H., & Chaerudin Manaf. (2024). Analysis of optimal portfolio formation using the single index model approach on Bisnis-27 index shares on the Indonesia Stock Exchange for the 2018-2022 period. Issues and Perspectives in Business and Social Sciences, 178–186. https://doi.org/10.33093/ipbss.2024.4.2.5