GUO, Hongyi; LIU, Yanjun; HU, Ludong; ZHANG, Xuanbo. A Multi-model Based Approach for Measuring Operational Efficiency in Smes: Theory Construction and Empirical Analysis. International Journal of Finance and Investment, [S. l.], v. 1, n. 1, p. 47–49, 2024. DOI: 10.54097/hpjz6h74. Disponível em: https://ijfi.net/index.php/ijfi/article/view/9. Acesso em: 19 oct. 2026.