Чернець, М.В., and Ю.М. Чернець. 2016. “The Estimation of Contact Strength, Wear and Durability of Cylindrical Spur Tractive Gear of Electric Locomotive at High-Altitude Correction of Engagement”. Problems of Tribology 78 (4):23-26. https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/481.