%0 Journal Article %A Nowakowski, Andrzej %T Sufficient optimality conditions for multivariable control problems %J Discussiones Mathematicae. Differential Inclusions, Control and Optimization %D 2007 %P 135-150 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMDICO_2007_27_1_a7/ %G en %F DMDICO_2007_27_1_a7