CALVO CALVO, Ángel Amado. Technological change, opening and internationalization of Spanish telecommunications. The transition to the third generation of mobile telephony. UNIE Business Research, [S. l.], v. 8, n. 1, p. 3–30, 2019. DOI: 10.3926/hdbr.196. Disponível em: https://unieresearch.universidadunie.com/ubr/article/view/196. Acesso em: 29 sep. 2026.