Optimal Stock Portfolio Issuers of Building Construction Registered in LQ45 Based on the Markowitz Approach. The Economics and Finance Letters, [S. l.], v. 6, n. 1, p. 100–109, 2019. DOI: 10.18488/journal.29.2019.61.100.109. Disponível em: https://archive.conscientiabeam.com/index.php/29/article/view/1623. Acesso em: 7 aug. 2026.