@article{EJDE_2009__2009__a72,
     author = {Emamizadeh, Behrouz and Prajapat, Jyotshana V.},
     title = {Symmetry in rearrangement optimization problems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2009},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a72/}
}