Pariathamby, Agamuthu, and Irwan T. “Electronics Wastewater Sludge Treatment Using SIS With Ordinary Portland Cement”. Malaysian Journal of Science 24, no. 1 (June 30, 2005): 39–47. Accessed November 20, 2024. https://samudera.um.edu.my/index.php/MJS/article/view/17161.