Hasan, H., R. Khaleefah, N. Al haboubi, and R. Salman. “Effect of Agitation, Temperature, and Quenching Medium on Cooling Curve and Cooling Rate for Steels”. Al-Nahrain Journal for Engineering Sciences, Vol. 21, no. 4, Dec. 2018, pp. 473-8, doi:10.29194/NJES.21040473.