BERCZYNSKI, Pawel. Complex geometrical optics and nonlinear absorption/gain effects. Photonics Letters of Poland, [S. l.], v. 8, n. 2, p. pp. 54–56, 2016. DOI: 10.4302/photon. lett. pl.v8i2.627. Disponível em: http://photonics.pl/PLP/index.php/letters/article/view/8-20. Acesso em: 3 may. 2024.