Prediction of Cumulative Death Cases in Nigeria Due to COVID-19 Using Mathematical Models. Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353), [S. l.], v. 4, n. 1, p. 20–24, 2020. DOI: 10.54987/bessm.v4i1.528. Disponível em: https://journal2.hibiscuspublisher.com/index.php/BESSM/article/view/528. Acesso em: 11 may. 2026.