Дубровка, Ф.Ф., and Ю. А. Овсяник. “Dual- And Multiband Horns of Feed Systems for Reflector-Type Antennas”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 38 (March 30, 2009): 130-147. Accessed April 25, 2024. https://radap.kpi.ua/radiotechnique/article/view/183.