Angkasali, Daniel, Peter Surjo, Rafaella Shiene Wijaya, Muhammad Mikail Athif Zhafir Asyura, and Slamet. “Utilization of Medical Mask Wastes As Filter Material for Air Purification Units”. Asian Journal of Chemistry 34, no. 12 (November 25, 2022): 3151–3156. Accessed July 3, 2024. https://asianpubs.org/index.php/ajchem/article/view/34_12_14.