Korosec, Marjan, and Janez Kopac. “Neural Network Based Selection of Optimal Tool – Path in Free Form Surface Machining”. Journal of Automation, Mobile Robotics and Intelligent Systems, vol. 1, no. 4, Jan. 2013, pp. 41-50, https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/409.