Functional possibilities of the system’s substitute models. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, [S. l.], n. 39, p. 23–26, 2009. DOI: 10.20535/RADAP.2009.39.23-26. Disponível em: https://radap.kpi.ua/radiotechnique/article/view/442. Acesso em: 3 apr. 2025.