Vakulenko, Karyna, Iryna Kazak, and Volodymyr Matsevityi. “Effect of the State of Surface Layer on 40х Steel Fatigue Characteristics”. Eastern-European Journal of Enterprise Technologies 3, no. 5(81) (June 15, 2016): 18–24. Accessed July 18, 2024. https://journals.uran.ua/eejet/article/view/69644.