a1 Faculty of Mathematics, D.A.L., University of Craiova, Romania (email: email@example.com)
We establish that the elliptic equation
(Received October 15 2007)
2000 Mathematics subject classification
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p1 Corresponding address: Str. Tudor Vladimirescu, Nr. 26, 200534 Craiova, Romania
The author’s research was financed by Romanian AT grant 97GR/25.05.2007 with CNCSIS code 100.