A. Fauzi Raffee, S. Nazahiyah Rahmat, H. Abdul Hamid, and M. Ismail Jaffar, “A Review on Short-Term Prediction of Air Pollutant Concentrations”, IJET, vol. 7, no. 3.23, pp. 32–35, Aug. 2018, doi: 10.14419/ijet.v7i3.23.17254.