Wahab, N. A., M. K. A. Kamarudin, and K. Abdul Rahim. “Prediction of Damage Cost of Bronchitis Due to Haze in Malaysia”. Malaysian Journal of Applied Sciences, Vol. 1, no. 2, Dec. 2016, pp. 1-8, https://journal.unisza.edu.my/myjas/index.php/myjas/article/view/8.