B. Grebert et Jc. Guillot, PERIODIC-SOLUTIONS OF COUPLED NONLINEAR SCHRODINGER-EQUATIONS IN NONLINEAR OPTICS - THE NONRESONANT CASE, Applied mathematics letters, 8(5), 1995, pp. 53-56
We construct periodic solutions to coupled nonlinear one-dimensional S
chrodinger equations with periodic boundary conditions in the nonreson
ant case.