Calzada, Joan, and Anton Costas Comesaña. “Telecommunications Liberalization in Spain: European Objectives Versus National Interests”. Revista de Historia Industrial — Industrial History Review 25, no. 63 (January 22, 2018): 161–204. Accessed October 17, 2024. https://revistes.ub.edu/index.php/HistoriaIndustrial/article/view/21205.