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Trend Analysis and GARCH Model for COVID-19 National Weekly Confirmed Cases in Nigeria for Abuja and Lagos State . Quarterly Journal of Econometrics Research , [S. l.], v. 8, n. 1, p. 1–10, 2022. DOI: 10.18488/88.v8i1.2931. Disponível em: https://archive.conscientiabeam.com/index.php/88/article/view/2931. Acesso em: 22 jul. 2026.