Hariom Yadav, and Varun Dave. “MACHINING TIME ESTIMATION BY EXPERIMENTAL METHOD USING NX CAM SOFTWARE FOCUSING CNC MACHINE”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 5, no. 3, Mar. 2018, pp. 394-6, https://ijaerd.org/index.php/IJAERD/article/view/2691.