Lisowicz, J. “Influence of Coefficient of Friction on Ti-6Al-4V Titanium Alloy Turning Process – FEM Analysis”. Technologia I Automatyzacja Montażu (Assembly Techniques and Technologies), Vol. 109, no. 3, Sept. 2020, pp. 22-29, https://czasopisma.prz.edu.pl/tiam/article/view/943.