%0 Journal Article %A Muthukumar, T. %A Nandakumaran, A.K. %T Darcy-type law associated to an optimal control problem %J Electronic Journal of Differential Equations %D 2008 %V 2008 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a32/ %G en %F EJDE_2008__2008__a32