Katporm, Phongsapat, and Phonpat Hemwan. “The Prediction of Particulate Matters 2.5 Micron (PM2.5) Concentration using Geographic Weighted Regression Modeling in Nan Province”. Defence Technology Academic Journal 1, no. 3 (January 11, 2020): 88–97. accessed October 8, 2026. https://sc01.tci-thaijo.org/index.php/dtaj/article/view/240530.