ISA SHUAIBU, M.; RAFINDADI SANUSI, A.; BALA ADAMU, M. Substitutability of Currency in Nigeria: A non-linear approach. Gusau International Journal of Management and Social Sciences, [S. l.], v. 4, n. 3, p. 18, 2021. Disponível em: https://gijmss.com.ng/index.php/gijmss/article/view/83. Acesso em: 15 jun. 2026.