Iskandar Shah Ishak, Shuhaimi Mansor, Tholudin Mat Lazim, and Muhammad Riza Abd Rahman. “Numerical Studies On Unsteady Helicopter Main-Rotor-Hub Assembly Wake”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 47, no. 1, July 2018, pp. 190-0, https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/2796.