PageHeader : Funkcialaj Ekvacioj, 30 (1987) 115-125 Title : $\mathrm{L}^{2}$ -Solutions for Nonlinear Schrodinger Equations Title : and Nonlinear Groups AuthorInfo : By AuthorInfo : Yoshio TSUTSUMI AuthorInfo : (Hiroshima University, Japan) section : 1. Introduction and main results section : 2. Lemmas. section : 3. Proof of Theorem 1.1. section : References