%0 Journal Article %A Guy Bouchitté %A Giuseppe Buttazzo %T Characterization of optimal shapes and masses through Monge-Kantorovich equation %J Journal of the European Mathematical Society %D 2001 %P 139-168 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s100970000027/ %R 10.1007/s100970000027 %F JEMS_2001_3_2_a1