ROSA, S. N.; TEREZA, L. .; AGUSTINA, E. .; DESILFA, Y.; SARI, D. . P. P. Formation of Optimal Portfolio Using A Single Index in Pharmaceutical Companies . Research in Accounting Journal (RAJ) , [S. l.], v. 4, n. 1, p. 19–26, 2023. DOI: 10.37385/raj.v3i1.1892. Disponível em: https://journal.yrpipku.com/index.php/raj/article/view/1892. Acesso em: 2 aug. 2025.