PIATYHORETS, H. S. Method of prizes determine on additional services which are available for passengers in railway stations and trains. Science and Transport Progress , [S. l.], n. 37, p. 290–294, 2011. DOI: 10.15802/stp2011/9456. Disponível em: https://stp.ust.edu.ua/article/view/9456. Acesso em: 17 jul. 2024.