RUOFEI DU. Measurement and Empirical Research of Digital Financial Development Level. International Journal of Computer Information Systems and Industrial Management Applications, [S. l.], v. 18, p. 22, 2026. DOI: 10.70917/ijcisim-2026-2816. Disponível em: https://cspub-ijcisim.org/index.php/ijcisim/article/view/2816. Acesso em: 29 jul. 2026.