Degaga, Yohannes Assefa, and Betelhem Tasew 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 (February 25, 2024): 42–57. Accessed October 10, 2026. https://www.ajol.info/index.php/ejssd/article/view/265686.