Vakulenko, I.O., Anofriiev, V.H. and Nadezhdin, Y.L. 2010. Changing the hardness of the metal on the surface of the rolling train wheels after the formation of the slide. Science and Transport Progress . 31 (Feb. 2010), 256–258. DOI:https://doi.org/10.15802/stp2010/13524.