Wong, K. Y., H. M. Kamar, and N. Kamsah. “Enhancement of Airborne Particles Removal in a Hospital Operating Room”. International Journal of Automotive and Mechanical Engineering 16, no. 4 (December 30, 2019): 7447-7463. Accessed August 11, 2020. https://journal.ump.edu.my/ijame/article/view/1310.