Degaga, Y., and B. 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, Vol. 11, no. 1, Jan. 2024, pp. 42-57, doi:10.20372/ejssdastu:v11.i1.2024.751.