Unilateral problem for a nonlinear wave equation with pLaplacian operator 
Carlos Raposo,Ducival Pereira,Celsa Maranhao 
Keywords:Unilateral problem, pLaplacian operator, global solution. 
Abstract: 
This work deals with the unilateral problem for the $p$Laplacian operator with source term. Using an appropriate penalization, we obtain a variational inequality for the equation perturbed and then the existence of solutions is analyzed. 



