Chala, D. B., & Beyene, Y. R. (2014). Rural Energy Sources and Energy Consumption Pattern in Selected Districts of Jimma and Illubabor Zones, South-western Ethiopia. International Journal of Sciences: Basic and Applied Research (IJSBAR), 17(1), 325-329. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/2952