Бичковський, В., and О. Ханчопуло. “Estimate of the Efficiency for Logistics Communication Systems”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 45, June 2011, pp. 66-70, doi:10.20535/RADAP.2011.45.66-70.