WASET
    C. L. Voon and  M. Awang,  Reduction of MMP Using Oleophilic Chemicals.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 88(4). 351 - 353
    [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/9999064.