Romao, E. C., and L. H. P. de Assis. “Numerical Simulation of 1D Unsteady Heat Conduction-Convection in Spherical and Cylindrical Coordinates by Fourth-Order FDM”. Engineering, Technology & Applied Science Research 8, no. 1 (February 20, 2018): 2389–2392. Accessed January 16, 2022. https://etasr.com/index.php/ETASR/article/view/1724.