1Ambrosetti A., Rabinowitz P. H., Dual variational methods in critical point theory and applications, J. Funct.Anal.. 1973. 14: 349-381.
2Zou W. M., Variant fountain theorems and their applications, Mannsc. Math.. 2001. 104: 343-358.
3Li G. B., Zhou H. S., Asymptotically linear Dirichlet problem for the p-Laplacian, Nonl. Anal. TMA, 2001,45: 1043-1055.
4Stuart C. A., Zhou H. S., A variational problem related to self-trapping of an electromagnetic field, Math.Methods in the Applied Sciences. 1996. 19: 1397-1407.
5Jeanjean L., On the existence of bounded Palais-Smale sequences and application to a Landesman-Luer type problem set on RN, Proc. Roy. Soc. Edinburgh, 1999, 129A: 787-809.
6Zhao J. F., Structure theory for Banach space, Wuhan: Wuhan Univ. Press. 1991 (in Chinese).
7Bartsch T., Infinitely many solutions of a symmetric Dirichlet problem, Nonl. Anal. TMA,1993, 20: 1205-1216.
8Willem M., Minmax theorems, Boston: Birkhaeuser. 1996.
9Bartolo P., Benci V., Fortunato D., Abstract critical point theorems and applications to some nonlinear problems with strong resonance at infinity, Nonl. Anal. TMA. 1983. 7: 981-1012.
10Yaag H., Fan X. L., Existence of infinitely many solutions of the p-Laplace equation with p-concave and convex nonlinearities, J. Lanzhou Univ. Nat. Sci., 1992, 35(2): 12-16 (in Chinese).
