Mohammed, I. Q., and A. H. Kadhum. “Optimizing the Parameters of Hot-Wire CNC Machine to Enhance the Cutting of Plastic Foam”. Al-Khwarizmi Engineering Journal, vol. 15, no. 3, Aug. 2019, pp. 29-37, https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/646.