Kean Hua, A., M. Pirdaus Yusoh, J. Yusof, M. F. A. Ahmad, S. Yahya, S. S. Mazlan, and M. Jaimun. “INCORPORATING ANN WITH PCR FOR PROGRESSIVE DEVELOPING OF AIR POLLUTION INDEX FORECAST”. PLANNING MALAYSIA, vol. 20, no. 23, Nov. 2022, doi:10.21837/pm.v20i23.1152.