Mathematics of Generalized Versions of the Melitz, Krugman and Armington Models with Detailed Derivations. Journal of Global Economic Analysis, [S. l.], v. 7, n. 2, 2022. DOI: 10.21642/JGEA.070203AF. Disponível em: http://www.jgea.org/ojs/index.php/jgea/article/view/156. Acesso em: 3 oct. 2025.