BALA, U.; CHIN, L.; MUSTAFA, G. Threshold Effects of Oil Price and Oil Export on Trade Balance in Africa. Journal of Economic Impact, [S. l.], v. 4, n. 1, p. 14–27, 2022. DOI: 10.52223/jei4012203. Disponível em: https://www.scienceimpactpub.com/journals/index.php/jei/article/view/198. Acesso em: 26 apr. 2024.