Emmanuel Alphonsus Akpan (2018) “Modeling Heteroscedasticity of Discrete-Time Series in the Face of Excess Kurtosis”, Global Journal of Science Frontier Research, 18(F7), pp. 21–32. Available at: https://journalofscience.org/index.php/GJSFR/article/view/2657 (Accessed: 2 May 2024).