HABIB, M. A.; SUJA, M. Z. U.; BASHAR, S. B.; ULLAH, S. M. Band gap calculation of 2-D photonic crystal and its application towards thin film solar cell. Photonics Letters of Poland, [S. l.], v. 3, n. 4, p. pp. 162–164, 2011. DOI: 10.4302/photon. lett. pl.v3i4.252. Disponível em: https://www.photonics.pl/PLP/index.php/letters/article/view/3-57. Acesso em: 6 jun. 2023.