Białas, Marcin, Jan Maciejewski, and Stanisław Kucharski. “Sliding of Spherical Ball on Solid Lubricating Coating Combined With Wear Process”. Welding Technology Review 93, no. 1 (February 27, 2021): 39–50. Accessed April 19, 2024. https://pspaw.pl/pspaw/article/view/1125.