Fauzan, R. A., Soekarno, S. ., & Rahadi, R. A. . (2026). Optimal Cross-Asset-Class Portfolio Construction Using the Markowitz Mean-Variance Framework: Evidence from a U.S. Dollar-Based Foreign Investor Perspective. Journal Development Manecos, 4(2), 421–432. https://doi.org/10.71435/742327