On Integral Equation and Least Squares Methods for Scattering by Diffraction Gratings. Communications in Computational Physics, [S. l.], v. 1, n. 6, p. 1010–1042, 2020. Disponível em: https://gsp.tricubic.dev/cicp/article/view/5439. Acesso em: 14 mar. 2026.