Rowell Allysius L. Cudiamat, et al. “An IoT-Based Smart Restroom Monitoring System With Occupancy Detection, Automated Soap Supply Management, and Real-Time Air Quality Sensing: Development and ISO IEC 25010 Evaluation”. Engineering And Technology Journal, vol. 11, no. 06, June 2026, pp. 10679-01, doi:10.47191/etj/v11i06.45.