Migała-Warchoł, Aldona, and Monika Pichla. “Forecasting the Number of Cases and Deaths from Covid-19”. International Entrepreneurship Review 7, no. 1 (March 31, 2021): 73–82. Accessed September 8, 2024. https://ier.uek.krakow.pl/index.php/pm/article/view/2015.