ARABI, Khalafalla Ahmed Mohamed; ELBEELY, Khalid Hassan. Optimal Indirect Tax Revenues and Economic Growth in Sudan Economy: A Threshold Regression Approach. European Scientific Journal, ESJ, [S. l.], v. 15, n. 13, p. 127, 2019. DOI: 10.19044/esj.2019.v15n13p127. Disponível em: https://test.eujournal.org/index.php/esj/article/view/12031. Acesso em: 18 apr. 2025.