Ardi AM, Darwanto D. Analysis of determining optimal portfolio in BPKH’s portfolios using Tangency Portfolio model. J. Eko. Keu. Isl. [Internet]. 2023 Jul. 17 [cited 2024 May 16];9(2):185-200. Available from: https://jurnal.uii.ac.id/JEKI/article/view/28318