Trzepieciński, Tomasz, Romuald Fejkiel, and Andrzej Kubit. “Experimental Evaluation of Value of Friction Coefficient in the Drawbead Region”. Advances in Mechanical and Materials Engineering 35, no. 298 (1) (April 28, 2018): 77-85. Accessed July 3, 2024. https://journals.prz.edu.pl/amme/article/view/1229.