@article{EJDE_2009__2009__a72,
     author = {Emamizadeh,  Behrouz and Prajapat,  Jyotshana V.},
     title = {Symmetry in rearrangement optimization problems},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1193.49003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a72/}
}