LEVY, S. A classic model of international trade. Estudios Económicos de El Colegio de México, [S. l.], v. 1, n. 2, p. 281–303, 1986. DOI: 10.24201/ee.v1i2.39. Disponível em: https://estudioseconomicos.colmex.mx/index.php/economicos/article/view/39. Acesso em: 7 may. 2024.