Arbain, N. H., Salimon, J., Salih, N., & Ahmed, W. A. (2022). Optimization for Epoxidation of Malaysian Jatropha curcas Oil Based Trimethylolpropane Ester Biolubricant. Applied Science and Engineering Progress, 15(3), 5552. https://doi.org/10.14416/j.asep.2021.10.009