Zolkefli, Ariff Azizi, and Norfazillah Talib. 2022. “Tribology Effect On Turning Machine Process Using Jatropha Oil With AC Nanoparticle”. Research Progress in Mechanical and Manufacturing Engineering 2 (2): 267-73. https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/3740.