NESTERUK, I. Visible and Real Sizes of New COVID-19 Pandemic Waves in Ukraine. Innovative Biosystems and Bioengineering, [S. l.], v. 5, n. 2, p. 85–96, 2021. DOI: 10.20535/ibb.2021.5.2.230487. Disponível em: http://ibb.kpi.ua/article/view/230487. Acesso em: 17 jun. 2021.