MOORHEAD, S. Radio Communication By Artificial Satellites. Journal of Telecommunications and the Digital Economy, [S. l.], v. 3, n. 3, p. 72–84, 2015. DOI: 10.18080/jtde.v3n3.12. Disponível em: https://mail.jtde.telsoc.org/index.php/jtde/article/view/12. Acesso em: 6 jul. 2024.