ANALISIS KEKERASAN MAKRO PADA REL KERETA API TANJUNG KARANG TIPE R54. Journal Foundry, [S. l.], v. 7, n. 2, p. 62–68, 2024. Disponível em: https://e-journal.polmanceper.ac.id/index.php/foundry/article/view/20. Acesso em: 5 jan. 2026.