GUNAWAN, Risky; OWEN, Geraldo. Clustering and Portfolio Optimization on LQ45 Stocks with Fuzzy C-Means and Single Index Model. Jurnal Matematika, Statistika dan Komputasi, [S. l.], v. 21, n. 3, p. 655–668, 2025. DOI: 10.20956/j.v21i3.42386. Disponível em: https://journal.unhas.ac.id/index.php/jmsk/article/view/42386. Acesso em: 27 feb. 2026.