@article{EJDE_2014__2014__a18,
     author = {Mohammadi, Abbasali and Yousefnezhad, Mohsen},
     title = {Optimal ground state energy of two-phase conductors},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2014},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a18/}
}