F. J. Diaz Perez, D. Chinarro, R. P. Otin, and A. G. Mouhaffel, “Growth forecast of the covid-19 with the gompertz function, Case study: Italy, spain, Hubei (China) and South Korea”, ijaers, vol. 7, no. 7, Jul. 2020, Accessed: Nov. 21, 2024. [Online]. Available: https://journal-repository.com/index.php/ijaers/article/view/2200