DUBROVKA, F. F.; PILTYAY, S. I. BOUNDARY PROBLEM SOLUTION FOR EIGENMODES IN COAXIAL QUAD-RIDGED WAVEGUIDES. Information and Telecommunication Sciences, [S. l.], n. 1, p. 48–61, 2014. DOI: 10.20535/2411-2976.12014.48-61. Disponível em: https://infotelesc.kpi.ua/article/view/28868. Acesso em: 3 sep. 2025.