CHEN, Xinyi. Portfolio Theory Application and the Contrast with Reality. Transactions on Economics, Business and Management Research, [S. l.], v. 16, p. 166–169, 2025. DOI: 10.62051/05jtjn21. Disponível em: https://tebmr.com/index.php/ojs/article/view/30. Acesso em: 21 jul. 2026.