%0 Journal Article %A El Kadiri, Mohamed %T Liouville's theorem and the restricted mean property for biharmonic functions %J Electronic Journal of Differential Equations %D 2004 %V 2004 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a23/ %G en %F EJDE_2004__2004__a23