LIU, Zhewei. Investment Portfolio Construction in the Beijing-Tianjin-Hebei Region of the CSI 300. BCP Business & Management, [S. l.], v. 30, p. 311–319, 2022. DOI: 10.54691/bcpbm.v30i.2444. Disponível em: https://bcpublication.org/index.php/BM/article/view/2444. Acesso em: 30 apr. 2026.