Husna Zakaria, Izatul, Jafni Jafni Azhan Ibrahim, and Abdul Aziz Othman. 2018. “Oil Palm Fibre Waste to Biogas Electricity Production Framework for Mill Operation”. International Journal of Engineering & Technology 7 (3.7): 187-91. https://doi.org/10.14419/ijet.v7i3.7.16347.