Oanh, T. T. K., H. V. Quoc, L. T. Nha, N. T. B. Chau, and N. H. Phat. “The Relationship Between the Shadow Economy, Corruption, and Taxes: Empirical Evidence From Countries With High and Low Financial Development ”. Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice, Vol. 34, no. 4, Oct. 2024, pp. 78-104, https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/815.