M. Rashid, S. Hajar, A. Nurnadia, and M. R. Ammar. “THE EFFECT OF PrekotAC ON PARTICLE PENETRATION THROUGH A PTFE FILTER MEDIA”. PERINTIS eJournal 5, no. 1 (March 2, 2021): 22–33. Accessed October 3, 2025. https://perintis.org.my/ejournalperintis/index.php/PeJ/article/view/41.