SOROKA, O. Research of frogs point wear resistance in various conditions for transportation systems: main-line railway and subway. Transport systems and technologies, [S. l.], n. 41, p. 117–130, 2023. DOI: 10.32703/2617-9059-2023-41-10. Disponível em: https://tst.duit.in.ua/index.php/tst/article/view/371. Acesso em: 24 may. 2025.