From Old Ciphers to Modern Communications. Advances in Military Technology, [S. l.], v. 14, n. 1, p. 79–88, 2019. DOI: 10.3849/aimt.01281. Disponível em: https://www.aimt.cz/index.php/aimt/article/view/1281.. Acesso em: 3 jul. 2024.