Hayashi N, Naumkin P l. Existence of asymptotically free solutions for quadratic nonlinear Schrödinger equations in 3d. CUBO [Internet]. 2007 Apr. 1 [cited 2024 May 14];9(1):27–37. Available from: https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/1597