Rybkin, V. V., Y. L. Zayats, V. V. Kovalenko, and P. O. Pshinko. “Investigations of a Load-Life With Pre-Stressed Concrete Sleepers by Ukrainian Production”. Science and Transport Progress , no. 39 (December 20, 2011): 173–179. Accessed May 3, 2024. https://stp.ust.edu.ua/article/view/6908.