Amiruddin, Irfan N., and Edy S. Rusdy. 2026. “Optimal Portfolio Formation Using a Combination of Genetic Algorithms and Particle Swarm Optimization Based on Cluster Analysis”. Jurnal Matematika, Statistika Dan Komputasi 22 (3):671-85. https://doi.org/10.20956/j.v22i3.50039.