MEDRANO, L. On the theory of customs union and tariff policy. Estudios Económicos de El Colegio de México, [S. l.], v. 12, n. 1, p. 53–65, 1997. DOI: 10.24201/ee.v12i1.249. Disponível em: https://estudioseconomicos.colmex.mx/index.php/economicos/article/view/249. Acesso em: 19 apr. 2024.