MATAGNE, E. Detailed Analysis of the Electromagnetic Normal Modes of Spherical and Annular Spherical Cavities: Energy, Thrust and Losses. Implications on the Spherical Casimir Effect. Advanced Electromagnetics, [S. l.], v. 11, n. 4, p. 69–79, 2022. DOI: 10.7716/aem.v11i4.1945. Disponível em: https://www.aemjournal.org/index.php/AEM/article/view/1945. Acesso em: 23 dec. 2025.