STEGEMAN, George I.; HU, Honghua. Refractive Nonlinearity of Linear Symmetric Molecules and Polymers Revisited. Photonics Letters of Poland, [S. l.], v. 1, n. 4, p. pp. 148–150, 2009. DOI: 10.4302/photon. lett. pl.v1i4.74. Disponível em: https://www.photonics.pl/PLP/index.php/letters/article/view/1-50. Acesso em: 28 mar. 2024.