Zr. Jin, MULTIPLE SOLUTIONS FOR A CLASS OF SEMILINEAR ELLIPTIC-EQUATIONS, Proceedings of the American Mathematical Society, 125(12), 1997, pp. 3659-3667
We show that for a class of semilinear elliptic equations there are at
least three nontrivial solutions. Existence of infinitely many soluti
ons is also shown when the nonlinear term is odd. In our results, the
nonlinear term can grow super-critically at infinity.