Efficient Spectral Methods for Transmission Eigenvalues and Estimation of the Index of Refraction. Journal of Mathematical Study, [S. l.], v. 47, n. 1, p. 1–20, 2014. DOI: 10.4208/jms.v47n1.14.01. Disponível em: https://global-sci.com/index.php/jms/article/view/13213. Acesso em: 6 dec. 2025.