M. H. Halif and N. A. Azmir, “Flow Channeling And Restriction Zone Identification in Gas Mask Filter Cartridges using CFD”, IJIE, vol. 17, no. 8, pp. 313–323, Dec. 2025, Accessed: Jul. 22, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/24020