ORLOVS’KYI, A. M.; KALENYK, K. L.; KOVALCHUK, V. V. Investigation of longitudinal profile of rigid frogs on reinforced concrete sleepers. Science and Transport Progress , [S. l.], n. 41, p. 130–135, 2012. DOI: 10.15802/stp2012/7880. Disponível em: https://stp.ust.edu.ua/article/view/7880. Acesso em: 29 apr. 2024.