%0 Journal Article %A U. F. Prieto %A P. Pedregal %T A General Lower Bound for the Relaxation of an Optimal Design Problem with a General Quadratic Cost Functional, and a General Linear State Equation %J Journal of convex analysis %D 2012 %P 281-294 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2012_19_1_JCA_2012_19_1_a15/ %F JCA_2012_19_1_JCA_2012_19_1_a15