Mallick, Ashis, Rajiv Ranjan, Dilip K. Prasad, and Ranjan Das. 2016. “Inverse Prediction and Application of Homotopy Perturbation Method for Efficient Design of an Annular Fin With Variable Thermal Conductivity and Heat Generation”. Mathematical Modelling and Analysis 21 (5):699-717. https://doi.org/10.3846/13926292.2016.1225606.