Rana, Parveen. “Mathematical Model on Diabetes Millitus Using Fractional Approach; Fractional Homotopy Perturbation Method and Fractional Variational Iteration Method: A Comparison”. RESEARCH HUB International Multidisciplinary Research Journal , vol. 9, no. 2, Feb. 2022, pp. 01-09, https://doi.org/10.53573/rhimrj.2022.v09i02.001.