ЦИБУЛЯК, Б. Protection of information leakage by channels telephone. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, [S. l.], n. 55, p. 143-148, 2013. DOI: 10.20535/RADAP.2013.55.143-148. Disponível em: https://radap.kpi.ua/radiotechnique/article/view/712. Acesso em: 1 may. 2024.