Assma Jassim Harfash, and Abdul-Sattar Jaber Al-Saif. “MHD Flow of Fourth Grade Fluid Solve by Perturbation-Iteration Algorithm”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 59, no. 2, Mar. 2024, pp. 220-31, https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/3225.