Mvili-Gampio, Steve, and Lukas W. Snyman. “Developing a Small Photovoltaic Power Supply System With Adaptive Technologies for Rural Africa: Design, Cost and Efficiency Analyses”. Journal of Energy in Southern Africa 29, no. 4 (December 3, 2018): 60–68. Accessed May 6, 2024. https://energyjournal.africa/article/view/5399.