Kundera, Ch, and J Bochnia. “TESTS OF PTFE COMPOSITE MATERIALS FOR SLIDING RINGS”. Bulletin of Sumy National Agrarian University. The series: Mechanization and Automation of Production Processes, no. 3(37) (1): 3-8. Accessed November 22, 2024. https://snaubulletin.com.ua/index.php/mapp/article/view/128.