Hamzah, Amir Syafiq Syamin Syah, and Ali Hassan Mohamed Murid. 2018. “Nonlinear Partial Dierential Equations Model Related to Oxidation Pond Treatment System: A Case Study of MPHO at Taman Timor Oxidation Pond, Johor Bahru”. MATEMATIKA 34 (2):293-311. https://doi.org/10.11113/matematika.v34.n2.1038.