Ikpe, Aniekan Essienubong, et al. “Port Flow Simulation and In-Cylinder Swirl Motion Characteristic Effects in Internal Combustion Engine Duty Cycle”. Applications of Modelling and Simulation, vol. 5, Mar. 2021, pp. 102-14, https://www.ojs.arqiipubl.com/index.php/AMS_Journal/article/view/254.