Itodo, I.N., G.E. Agyo, and P. Yusuf. “Performance Evaluation of a Biogas Stove for Cooking in Nigeria”. Journal of Energy in Southern Africa 18, no. 4 (August 1, 2007): 14–18. Accessed July 21, 2024. https://journals.assaf.org.za/index.php/jesa/article/view/3391.