RAMM, A. One-dimensional inverse scattering and spectral problems. CUBO, A Mathematical Journal, [S. l.], v. 6, n. 1, p. 313–426, 2004. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1659. Acesso em: 19 may. 2024.