Levochko, B. S., A. O. Makhota, and O. O. Shekhvatov. “METHOD OF DETERMINING THE PARAMETERS OF THE WAVE-LIKE SURFACE WEAR ON RAILS ROLLING IN ACCORDANCE WITH CORRELATION FUNCTION”. Science and Transport Progress, no. 2, Nov. 2003, pp. 187-90, doi:10.15802/stp2003/21282.