NEGARA, I. N. W.; LANGI, Y. A.; MANURUNG, T. 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: 14 may. 2024.