Atokolo , WilliamAja , Remigius OkekeOmale , DavidAcheneje , Godwin OnuchePaul , Rose Veronica and Amos , Jeremiah. (2025). Numerical Analysis of a New COVID-19 Control Model Incorporating Three Different Fractional Operators.
            <i>Journal of Nonlinear Modeling and Analysis</i>. <i>7</i> (4).
            1274-1306.
         doi:10.12150/jnma.2025.1274