The Consequences of Shadow Economy and Corruption on Tax Revenue Performance in Nigeria. Studia Universitatis Vasile Goldiș Arad, Seria Științe Economice, [S. l.], v. 29, n. 3, p. 64–79, 2019. Disponível em: https://publicatii.uvvg.ro/index.php/studiaeconomia/article/view/596. Acesso em: 17 apr. 2026.