Shagaiya, D. Y., A. Z. Abdul, I. Zuhaila, and S. Faisal. “Double Stratification Effects on Unsteady Electrical MHD Mixed Convection Flow of Nanofluid With Viscous Dissipation and Joule Heating”. Journal of Applied Research and Technology, vol. 15, no. 5, June 2019, doi:10.1016/j.jart.2017.05.007.