1. A. Ambrosetti, M. Badiale, S. Cingolani, Semiclassical states of nonlinear Schrödinger equations, Arch. Rat. Mech. Anal.
2. A. Bahri, Y. Li, O. Rey, On a variational problem with lack of compactness: the topological effect of the critical points at infinity
3. Ginzburg–Landau Vortices, PNLDE;Bethuel,1994
4. Homoclinic type solutions for semilinear elliptic PDE on RN;Coti Zelati;Comm. Pure Appl. Math.,1992
5. Local mountain passes for semilinear elliptic problems in unbounded domains;del Pino;Calc. Var. PDE,1996