“Analysis of ‘big Data’ and Mathematical Modeling of the Covid-19 Epidemic in Europe”. Bulletin of V.N. Karazin Kharkiv National University, series «Mathematical modeling. Information technology. Automated control systems» 52 (November 29, 2021): 35–42. Accessed October 25, 2026. https://periodicals.karazin.ua/mia/article/view/21415.