CUDDINGTON, J. T.; WEI, H. An empirical analysis of real commodity price trends: Aggregation, model selection and implications. Estudios Económicos de El Colegio de México, [S. l.], v. 7, n. 2, p. 159–179, 1992. DOI: 10.24201/ee.v7i2.299. Disponível em: https://estudioseconomicos.colmex.mx/index.php/economicos/article/view/299. Acesso em: 29 may. 2024.