Piltyay, S. I., and F. F. Dubrovka. “Eigenmodes Analysis of Sectoral Coaxial Ridged Waveguides by Transverse Field-Matching Technique. Part 1. Theory”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia0, no. 54 (November 3, 2013): 13-23. Accessed November 24, 2024. https://radap.kpi.ua/radiotechnique/article/view/657.