Setiawan, Dwi, Johanis Pangala, Abdul Swastika, and Armansyah Tambunan. “Technical Feasibility to Utilize Wasted Empty Fruit Bunch from Small Scale Farms for Simultaneous Production of Biochar and Electricity”. International Journal of Oil Palm 3, no. 3 (December 30, 2020): 88-98. Accessed April 23, 2021. http://ijop.id/index.php/ijop/article/view/54.