%0 Journal Article %A J. Lions %T Some questions in the optimal control of distributed systems %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1985 %P 57-72 %V 40 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1985_40_4_a7/ %G en %F RM_1985_40_4_a7