Electron. J. Diff. Eqns., Vol. 1997(1997), No. 13, pp 1-10.
C. O. Alves
This article concerns with the problem
Using the Ekeland Variational Principle and the Mountain Pass Theorem, we show the existence of such that there are at least two non-negative solutions for each in .
Submitted April 22, 1997. Published August 19, 1997.
Math Subject Classification: 35J20, 35J25.
Key Words: Mountain Pass Theorem, Ekeland Variational Principle.
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