DO, The Dan; DAO, Le Kieu Oanh. Does “The Purchasing Managers’ index” (PMI) affect the operational efficiency of commercial banks in Vietnam?. Journal of Finance - Marketing Research, [S. l.], v. 15, n. 8, p. 86–98, 2024. DOI: 10.52932/jfm.v15i8.584. Disponível em: https://jfm.edu.vn/index.php/jfme/article/view/715. Acesso em: 15 dec. 2025.