Constructing an Optimal Portfolio with a Single Index Model on the Shares of Bumn Companies Listed in the IDXBUMN20 Index on the Indonesia Stock Exchange. West Science Business and Management, [S. l.], v. 1, n. 05, p. 386–395, 2023. DOI: 10.58812/wsbm.v1i05.499. Disponível em: https://wsj.westsciences.com/index.php/wsbm/article/view/499. Acesso em: 8 apr. 2025.