Rybkin, V. V., and M. P. Sysyn. “THE PRESENCE OF VERTICAL IRREGULARITIES OF RAILWAY TRACK ACCORDING TO THE CAR TRACK METER”. Science and Transport Progress , no. 2 (November 25, 2003): 24–30. Accessed November 24, 2024. https://stp.ust.edu.ua/article/view/21029.