Arun Kumar Chaudhary, et al. “Development of a Low-Cost, High-Accuracy Particulate Matter (PM) Sensor for AQI Monitoring: Design and Validation of Model for Predicting AQI in Different Areas ”. Metallurgical and Materials Engineering, vol. 30, no. 1, Dec. 2023, pp. 81-93, doi:10.63278/mme.v30i1.1187.