WAN, Yuhan. Portfolio Optimization Based On 6 American Stocks. Highlights in Business, Economics and Management, [S. l.], v. 61, p. 11–15, 2025. DOI: 10.54097/qr7wjp60. Disponível em: https://hbem.org/index.php/OJS/article/view/534. Acesso em: 16 aug. 2026.