ЛЕВЧЕНКО, Є. Г.; ПРУС, Р. Б.; РАБЧУН, Д. І. Indicators of costs productivity of information security. Ukrainian Scientific Journal of Information Security, [S. l.], v. 18, n. 2, p. 6–11, 2012. DOI: 10.18372/2225-5036.18.3420. Disponível em: https://jrnl.nau.edu.ua/index.php/Infosecurity/article/view/3420. Acesso em: 2 feb. 2026.