Supply chain management and spare parts issues in Iranian railway industry: Implications for equipment maintenanc. Singaporean Journal of Business Economics and Management, [S. l.], v. 11, n. 2, p. 21–22, 2025. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/563. Acesso em: 16 jul. 2026.