Effect of frequency Chirp on the black and gray solitions. Baghdad Science Journal, Iraq, Baghdad, v. 2, n. 2, p. 301–306, 2005. DOI: 10.21123/bsj.2005.617. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/617.. Acesso em: 4 jul. 2024.