Degaga, Yohannes, and Betelhem Yami. 2024. “Enhancing the Synthesis of Biolubricant from Used Chicken Fat: Optimization of Operating Parameters Using Magnesium Oxide Nanoparticles As a Catalyst and Response Surface Methodology”. Ethiopian Journal of Science and Sustainable Development 11 (1), 42-57. https://doi.org/10.20372/ejssdastu:v11.i1.2024.751.