1. Instabilite des etats stationnaires dans les equations de schrodinger et de Klein–Gordon non linearires;Berestycki;C. R. Acad. Sci. Paris, Seire I,1981
2. T. Cazenave, An Introduction to Nonlinear Schrödinger Equations, in: Textos de Metodos Matematicos, vol. 22, Rio de Janeiro, 1989
3. Orbital stability of standing waves for some nonlinear Schrödinger equations;Cazenave;Comm. Math. Phys.,1982
4. On the blowing-up of solutions to the Cauchy problem for the nonlinear Schrödinger equation;Glassey;J. Math. Phys.,1977
5. On the class of nonlinear Schrödinger equations I, II;Ginibre;J. Funct. Anal.,1979