“Outlier and Normality Testing of the Residuals for the Morgan-Mercer-Flodin (MMF) Model Used for Modelling the Total Number of COVID-19 Cases for Brazil” (2021) Bioremediation Science and Technology Research (e-ISSN 2289-5892), 9(1), pp. 13–19. doi:10.54987/bstr.v9i1.592.