OUKHALLOU, Y. A gravity model for international trade and conflict. Journal of Economics and Political Economy, [S. l.], v. 7, n. 3, p. 180–187, 2020. DOI: 10.1453/jepe.v7i3.2094. Disponível em: https://journals.econsciences.com/index.php/JEPE/article/view/2094. Acesso em: 21 nov. 2024.