Ahmad Rajani, Dalila Mat Said, Ahmad Fudholi, Zulkarnain Ahmad Noorden, Nasarudin Ahmad, and Tinton Dwi Atmaja. “Off-Grid Photovoltaic-Biogas Hybrid System for an Indonesian Boarding School”. ELEKTRIKA- Journal of Electrical Engineering 22, no. 2 (August 28, 2023): 37–46. Accessed July 3, 2024. https://elektrika.utm.my/index.php/ELEKTRIKA_Journal/article/view/436.