PAGAN, A. R.; SABAU, H. On the inconsistency of the MLE in certain heteroskedastic regression models. Estudios Económicos de El Colegio de México, [S. l.], v. 6, n. 2, p. 159–172, 1991. DOI: 10.24201/ee.v6i2.314. Disponível em: https://estudioseconomicos.colmex.mx/index.php/economicos/article/view/314. Acesso em: 29 may. 2024.