%0 Journal Article %A Marian Muresan %T Controllability and Relaxation in Banach Spaces %J Mathematica balkanica %D 2005 %P 175 %V 19 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2005_19_1-2_a18/ %F MABA_2005_19_1-2_a18