Kai, X. , Abbas, L. , Dongyang, C. , Fufeng, Y. , Xiaoting, R.. "Numerical Investigations on Dynamic Stall of a Pitching-Plunging Helicopter Blade Airfoil ". World Academy of Science, Engineering and Technology, Open Science Index 130, International Journal of Mechanical and Mechatronics Engineering, (2017), 11(10), 1639 - 1644.