Purwibawa, Bagus Ageng, and Saidah. “Prototype of Solar Cell Automatic Charging Handphone As Alternative Sources of Electricity”. JEECS (Journal of Electrical Engineering and Computer Sciences) 7, no. 1 (June 30, 2022): 1185–1196. Accessed May 20, 2024. https://ejournal.ubhara.ac.id/jeecs/article/view/31.