Yuliani, Poppy, Hardiansyah Hardiansyah, and Nicko Albart. 2025. “Portfolio Efficiency Analysis of UNVR and SMGR Using the Efficient Frontier Approach: A Comparative Study in the Framework of Indonesia’s Green Economy Commitment”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) 8 (3), 12202-11. https://doi.org/10.31538/iijse.v8i3.8067.