CALVO CALVO, Ángel. Telecommunications and spillovers. Telephone equipment industry in Spain between the captive market and liberalization, 1953-1963. Revista de Historia Industrial — Industrial History Review, [S. l.], v. 20, n. 45, p. 145–174, 2017. DOI: 10.1344/rhi.v20i45.20790. Disponível em: https://revistes.ub.edu/index.php/HistoriaIndustrial/article/view/20790. Acesso em: 13 jul. 2024.