TWO SOLUTIONS FOR NONHOMOGENEOUS KLEIN-GORDON EQUATIONS COUPLED WITH BORN-INFELD TYPE EQUATIONS.

This article concerns the nonhomogeneous Klein-Gordon equation coupled with a Born-Infeld type equation, ... where ω is a positive constant. We obtain the existence of two solutions using the Mountain Pass Theorem, and the Ekeland's variational principle in critical point theory. [ABSTRACT FROM AUTHOR]