“Test of the Randomness of Residuals and Detection of Potential Outliers for the Morgan-Mercer-Flodin Used in the Fitting of the Prediction of Cumulative Death Cases in Nigeria Due to COVID-19” (2022) Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353), 6(1), pp. 9–13. doi:10.54987/bessm.v6i1.703.