ВОРОЖКО, В. П. Secrets protection and counteracting espionage in the United States between beginning of the war for independence and the end of WW I (1774-1918). Ukrainian Scientific Journal of Information Security, [S. l.], v. 22, n. 3, p. 265–271, 2016. DOI: 10.18372/2225-5036.22.11098. Disponível em: https://jrnl.nau.edu.ua/index.php/Infosecurity/article/view/11098. Acesso em: 3 feb. 2026.