Maniam, G., Hindryawati, N. and Yusoff, M. (2015) “Rice Husk Silica Supported Oil Palm Fruit Ash as a Catalyst in the Transesterification of Waste Frying Oil”, Journal of Engineering and Technology (JET), 6(1), pp. 1–12. Available at: https://jet.utem.edu.my/jet/article/view/180 (Accessed: 21November2024).