Uba, G., and S. Yahuza. “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”. Bulletin of Environmental Science and Sustainable Management (e-ISSN 2716-5353), vol. 6, no. 1, July 2022, pp. 9-13, doi:10.54987/bessm.v6i1.703.