HUNG, . . D. T. .; NHI, . . P. L. .; LONG, L. B. . The impact of audit quality on operational efficiency of non-financial enterprises listed on the Vietnamese stock market in the period before and after COVID-19 . The Economics and Finance Letters, [S. l.], v. 12, n. 4, p. 692–705, 2025. DOI: 10.18488/29.v12i4.4614. Disponível em: https://archive.conscientiabeam.com/index.php/29/article/view/4614. Acesso em: 27 dec. 2025.