TY - JOUR T1 - Shape optimization for Dirichlet problems: relaxed formulations and optimally conditions JF - Appl.Math.Optim. 23 (1991), no.1, p. 17-49. Y1 - 1991 A1 - Giuseppe Buttazzo A1 - Gianni Dal Maso PB - SISSA Library UR - http://hdl.handle.net/1963/880 U1 - 2911 U2 - Mathematics U3 - Functional Analysis and Applications ER -