Z. Ali Othman, N. Ismail, A. Abu Bakar, M. T. Latif, and S. M. Syed Abdullah, “Rules Discovery of High Ozone in Klang Areas using Data Mining Approach”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 8, no. 6, pp. 2683–2689, Dec. 2018.