Uba, Garba, Hafeez Muhammad Yakasai, Abdussamad Abubakar, and Mohd Yunus Yunus Shukor. “Prediction of Cumulative Death Cases in Brazil Due to Covid-19 Using Mathematical Models”. Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353) 4, no. 1 (July 31, 2020): 13–19. Accessed November 8, 2024. https://journal.hibiscuspublisher.com/index.php/BESSM/article/view/527.