A Study on the Eigen-Property of the Cylindrical Coaxial Cavity by FEM. Global Journals of Research in Engineering, [S. l.], v. 16, n. F1, p. 15–18, 2016. Disponível em: https://testing.engineeringresearch.org/index.php/GJRE/article/view/1400. Acesso em: 6 jun. 2026.