Довбня, Н.П., Л.М. Бондаренко, Д.В. Бобырь, and Я. І. Шевченко. “Analytical Determination of the Reduced Coefficient of Friction Ball and Roller Bearings”. Problems of Tribology 79, no. 1 (June 2, 2016): 20–24. Accessed June 21, 2024. https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/505.