a1 Faculty of Mathematics, D.A.L., University of Craiova, Romania (email: firstname.lastname@example.org)
We establish that the elliptic equation
(Received October 15 2007)
2000 Mathematics subject classification
Keywords and phrases
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.