JI, Xinyue. Comparison of Portfolio Optimizations under Markowitz Model in Technology Sector and Financial Services Sector. Highlights in Business, Economics and Management, [S. l.], v. 24, p. 1194–1202, 2024. DOI: 10.54097/32f00f69. Disponível em: https://drpress.org/ojs/index.php/HBEM/article/view/16351. Acesso em: 30 apr. 2026.