GALVIS ORTIZ, Carlos Alberto. Oligopolies versus Democracy: Is this the end of communication?. Anagramas Rumbos y Sentidos de la Comunicación, [S. l.], v. 6, n. 12, p. 13–27, 2014. Disponível em: http://udem.scimago.es/index.php/anagramas/article/view/706. Acesso em: 18 may. 2024.