Salimon, Jumat, and Ainaatul Asmaa' Ishak. “Optimization Process for Esterification of Rubber Seed Oil (RSO) With Trimethylolpropane (TMP)”. Journal of Science and Technology 4, no. 1 (March 15, 2022). Accessed May 19, 2024. https://penerbit.uthm.edu.my/ojs/index.php/JST/article/view/470.