EMMANUEL ALPHONSUS AKPAN. Modeling Heteroscedasticity of Discrete-Time Series in the Face of Excess Kurtosis. Global Journal of Science Frontier Research, [S. l.], v. 18, n. F7, p. 21–32, 2018. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/2657. Acesso em: 2 may. 2024.