Degaga, Yohannes, and Betelhem Yami. “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, no. 1 (January 22, 2024): 42-57. Accessed June 25, 2024. https://ejssd.astu.edu.et/index.php/EJSSD/article/view/751.