%0 Journal Article %A Emamizadeh, Behrouz %A Prajapat, Jyotshana V. %T Symmetry in rearrangement optimization problems %J Electronic Journal of Differential Equations %D 2009 %V 2009 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a72/ %G en %F EJDE_2009__2009__a72