Zahari Taha, H.A. Salaam, T.M.Y.S. Tuan Ya, S.Y. Phoon, C.F. Tan and M.A. Akiah. “Vortex Tube Air Cooling: The Effect on Surface Roughness and Power Consumption in Dry Turning”. International Journal of Automotive and Mechanical Engineering, vol. 8, Dec. 2022, pp. 1477-86, doi:10.15282/ijame.8.2013.34.0122.