Sahin, Mehmet, Suleyman Yaldiz, Faruk Unsacar, Burak Yaldiz, Nikolaos Bilalis, Emmanuel Maravelakis, & Aristomenis Antoniadis. " Virtual Training Centre for Computer Numerical Control." INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL [Online], 3.2 (2008): 196-203. Web. 22 May. 2022