Electronic Journal of Differential Equations,
Vol. 2003(2003), No. 65, pp. 1-15.

Title: Deformation from symmetry for Schrodinger equations of higher
       order on unbounded domains

Authors: Addolorata Salvatore (Univ. di Bari, Italy)
         Marco Squassina (Politecnico di Milano, Italy) 

Abstract: 
 By means of a perturbation method recently introduced by Bolle,
 we discuss the existence of infinitely many solutions
 for a class of perturbed symmetric higher order Schrodinger
 equations with non-homogeneous boundary data on unbounded domains.
 
Submitted February 10, 2003. Published June 11, 2003.
Math Subject Classifications: 31B30, 35G30, 58E05.
Key Words: Higher order Schrodinger equations; deformation from symmetry.