Esteban-Oliver, Guillermo, and Jordi Martí-Henneberg. “The Expansion of the Spanish Railway Network (1848–1941): An Analysis through the Evolution of Its Companies”. Revista de Historia Industrial — Industrial History Review 31, no. 85 (July 15, 2022): 87–144. Accessed January 24, 2025. https://revistes.ub.edu/index.php/HistoriaIndustrial/article/view/37875.