@article{GDZPPN000461636, title = {Exponential Sums and Nonlinear Schr\"odinger Equations.}, journal = {Geometric and functional analysis}, volume = {3}, year = {1993}, pages = {157-178}, zbl = {0787.35096}, url = {http://dml.mathdoc.fr/item/GDZPPN000461636} }
Bourgain, J. Exponential Sums and Nonlinear Schrödinger Equations.. Geometric and functional analysis, Tome 3 (1993) pp. 157-178. http://gdmltest.u-ga.fr/item/GDZPPN000461636/