Ayyappan T.S, Anas A J, Thasleem M T, Ahmed Shiras, and Omer Muhseen J. “EXPERIMENTAL ANALYSIS & PERFORMANCE EVALUATION OF HIGH-PRESSURE NOZZLE ASSEMBLY FOR LASER CUTTING OF THICK CARBON STEEL PLATES”. International Journal of Advance Research in Engineering, Science & Technology, vol. 5, no. 4, Apr. 2018, pp. 457-6, https://ijarest.org/index.php/ijarest/article/view/1489.