Fauzan, R. A., Soekarno, S. . and 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), pp. 421–432. doi: 10.71435/742327.