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Nurulkamal Masseran, Razik Ridzuan Mohd Tajuddin, Mohd Talib Latif.  (2023).  Classifying Severity of Unhealthy Air Pollution Events in Malaysia: A Decision Tree Model.  - Sains Malaysiana.  2971-2983. 

Razik Ridzuan Mohd Tajuddin, Nurulkamal Masseran.  (2023).  Quantifying haze effect using air pollution index data.  - Sains Malaysiana.  -. 

Razik Ridzuan Mohd Tajuddin, Noriszura Ismail, Kamarulzaman Ibrahim.  (2022).  Several two-component mixture distributions for count data.  - Communications in Statistics - Simulation and Computation.  3760-3771.