NEGARA, I Nyoman Wijaya; LANGI, Yohanes A.R.; MANURUNG, Tohap. Analisis Portofolio Saham Model Mean – Variance Markowitz Menggunakan Metode Lagrange. d’Cartesian, [S. l.], v. 9, n. 2, p. 173–180, 2021. DOI: 10.35799/dc.9.2.2020.29656. Disponível em: https://ejournal.unsrat.ac.id/v3/index.php/decartesian/article/view/29656. Acesso em: 16 mar. 2026.