YAKOVIV, I. Information, signs, knowledge and intelligence. Collection "Information Technology and Security", [S. l.], v. 8, n. 2, p. 191–215, 2020. DOI: 10.20535/2411-1031.2020.8.2.222605. Disponível em: https://its.iszzi.kpi.ua/article/view/222605. Acesso em: 29 mar. 2024.