Adiwibowo, Indradarma, Dita Anggun Lestari, and Davit Manalu. 2018. “Enhancing Energy Security through Utilization of Local Resources: Case Study: Biomass Biogas Utilization in Berau Regency, East Kalimantan”. Indonesian Journal of Energy 1 (1):22-34. https://doi.org/10.33116/ije.v1i1.11.