N. H. Amdan and A. Huong, “Development of a Low Cost and Portable Ventilator Prototype”, EEEE, vol. 2, no. 2, pp. 206–213, Nov. 2021, Accessed: Apr. 08, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/4050