R. Asfar , Khaled, and Saifeddin M. Sawan. “Room Air Purification through the ‘Silent Virus Killer’”. Journal of Ecohumanism 3, no. 8 (November 28, 2024): 3266–3273. Accessed April 25, 2026. https://www.ecohumanism.co.uk/joe/ecohumanism/article/view/4967.