Salimon, Jumat, and Ainaatul Asmaa' Ishak. 2022. “Optimization Process for Esterification of Rubber Seed Oil (RSO) With Trimethylolpropane (TMP)”. Journal of Science and Technology 4 (1). https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/470.