Sifa, Agus, Tito Endramawan, M. Iksan Safi'i, and Wardika. 2023. “Optimization of Vortex Tube Design and Performance for Cooling Milling Process”. International Journal of Integrated Engineering 15 (7): 102-12. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/12259.