SYCHEVSKY, M. Spalling of the spring concrete ties by type NBK-7D after long period of attendance. Science and Transport Progress , [S. l.], n. 39, p. 203–207, 2011. DOI: 10.15802/stp2011/6913. Disponível em: https://stp.ust.edu.ua/article/view/6913. Acesso em: 6 may. 2024.