Innovative Freight Bogie NP-X. Current Problems in Rail Vehicles, [S. l.], v. 27, p. 265–271, 2025. DOI: 10.46585/spkv20252676. Disponível em: https://spkv.upce.cz/index.php/spkv/article/view/2676. Acesso em: 4 mar. 2026.