%0 Journal Article %A Gontara, Sabrine %A El Abidine, Zagharide Zine %T Existence of positive bounded solutions for some nonlinear polyharmonic elliptic systems %J Electronic Journal of Differential Equations %D 2010 %V 2010 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a34/ %G en %F EJDE_2010__2010__a34