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    Pascal Mwenge and  Jefrey Pilusa and  Tumisang Seodigeng,  Optimization of Biodiesel Production from Sunflower Oil Using Central Composite Design.   journal   = {International Journal of Biotechnology and Bioengineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2018, vol. 137(5). 139 - 145
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10008944.