et. al., E. A. V. . “Mathematical Modelling of Transient Free Convection MHD Flow Past a Vertical Plate With Periodic Temperature Using Homotopy Perturbation Method”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 10, Apr. 2021, pp. 5971-8, doi:10.17762/turcomat.v12i10.5420.