HAYASHI, Nakao; NAUMKIN, Pavel l. Existence of asymptotically free solutions for quadratic nonlinear Schrödinger equations in 3d. CUBO, A Mathematical Journal, [S. l.], v. 9, n. 1, p. 27–37, 2007. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1597. Acesso em: 12 oct. 2025.