Electronic Journal of Differential Equations,
Vol. 2002(2002), No. 83, pp. 1-16.

Title:  On certain nonlinear elliptic systems with indefinite terms
        
Authors: Ahmed Bensedik (Univ. de Tlemcen, Algerie)
 Mohammed Bouchekif (Univ. de Tlemcen, Algerie)
         
Abstract: 
   We consider an elliptic quasi linear systems with indefinite 
   term on a bounded domain. 
   Under suitable conditions, existence and positivity results
   for solutions are given.
     
Submitted April 2, 2002. Published October 2, 2002.
Math Subject Classifications: 35J20, 35J25, 35J60, 35J65, 35J70.
Key Words: Elliptic systems; p-Laplacian; variational methods;
           mountain-pass Lemma;  Palais-Smale condition; 
           potential function; Moser iterative method.