Шупта, О. О., and М.Ф. Богомолов. “Device for the Increase of Duration of Radio Signals”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 42 (May 15, 2010): 107-111. Accessed November 21, 2024. https://radap.kpi.ua/radiotechnique/article/view/606.