PILTYAY, S. I.; DUBROVKA, F. F. Eigenmodes analysis of sectoral coaxial ridged waveguides by transverse field-matching technique. Part 1. Theory. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, [S. l.], n. 54, p. 13-23, 2013. DOI: 10.20535/RADAP.2013.54.13-23. Disponível em: http://radap.kpi.ua/radiotechnique/article/view/657. Acesso em: 7 dec. 2021.