ROMANKO, V. I.; ROMANKO, O. V. PRODUCTIVITY IN RAILWAY TRANSPORT. Science and Transport Progress , [S. l.], n. 24, p. 241–242, 2008. DOI: 10.15802/stp2008/14663. Disponível em: https://stp.ust.edu.ua/article/view/14663. Acesso em: 15 apr. 2025.