Musa, Aaron Ruy, Mark Laurence Seplo, Josephine Salillas, and Brian Jay Lumauag. “The Development of Smart Indoor Air Purifier With Real-Time Monitoring System and Interchangeable Activated Carbon Filter”. Virtutis Incunabula 8, no. 1 (August 1, 2021): 23–37. Accessed August 27, 2025. https://journals.recoletosresearch.com/index.php/vi/article/view/28.