1. M. Reed and B. Simon, Methods of Modern Mathematical Physics, IV: Analysis of Operators, Academic Press, New York, 1978.
2. S. Agmon, Spectral properties of Schrödinger operators and scattering theory, Ann. Scuola Norm. Sup. Pisa Cl. Sci. (4) 2 (1975), 151–218.
3. M. Beceanu, A centre-stable manifold for the focusing cubic NLS in $\mathbb{R}^{1+3}$, Comm. Math. Phys. 280 (2008), 145–205.
4. —, A critical centre-stable manifold for the semilinear Schrödinger equation, submitted.
5. —, Structure of wave operators for critical potentials, in preparation.