Resonance conditions at the first or at the second eigenvalue will be considered.  

KEY WORDS: p-laplacian, eigenvalue, resonance, variational method.    

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Received: July, 2000.

M. Moussaoui and M. Moussaoui
Department of Mathematics
Faculty of Sciences
University Mohamed I
P.O. Box 524
60000 Oujda
Morocco
E-mail: moussaoui@sciences.univ-oujda.ac.ma