Variational Formulation for Guided and Leaky Modes in Multilayer Dielectric Waveguides. Communications in Computational Physics, [S. l.], v. 7, n. 3, p. 564–579, 2010. DOI: 10.4208/cicp.2009.09.043. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/5699. Acesso em: 5 dec. 2025.