Coronado Tordesillas, J., F. Rodríguez Lázaro, and R. Ruiz Fernández. “Regular Road Passenger Transport in Spain, 1924-1936. Legal Framework and Sector Analysis”. Revista De Historia Industrial — Industrial History Review, vol. 22, no. 52, Jan. 2018, pp. 111-37, doi:10.1344/rhi.v22i52.20988.