MARTÍNEZ VARA, T. George Lee Boag, Manual of Railway Statistics y The Railways of Spain. TST. Transportes, Servicios y Telecomunicaciones, [S. l.], n. 48, p. 141–145, 2022. DOI: 10.24197/tst.48.2022.141-145. Disponível em: https://revistas.uva.es/index.php/tst/article/view/6413. Acesso em: 17 may. 2025.