Kurhan, M. B., and M. A. Zaiats. “Efficiency Determination of Freight and Passenger Traffic Division According to the Expenses Criteria for Superstructure Maintenance and Repair”. Science and Transport Progress , no. 35 (December 25, 2010): 99–105. Accessed April 30, 2024. https://stp.ust.edu.ua/article/view/9098.