Do, The Vinh, and Nguyen Anh Vu Le. 2026. “Hybrid Nanofluid-MQL and Cold Air Cooling for Hard Milling: RSM–PSO Multi-Response Optimization”. Journal of Engineering and Technological Sciences 58 (5):673-84. https://doi.org/10.5614/j.eng.technol.sci.2026.58.5.6.